Ectropis occurrence trend prediction and prevention advice

First, the forecast based on

1, the insect population rises rapidly , the occurrence of large, heavy damage . March 20 -28 survey fifteen tea , tea inchworm up to 3 per square meter , a minimum of 0 , average 0.24 ; pressure sprayers April 7-9, 2009 survey Ectropis up to 26 , a minimum of one average 4.6 . Insect population density, rising fast, heavy damage .

In late February and March to early April rain , field humidity, frequently alternating cold and warm . Also, according to weather forecasts four months late, there are 2-3 times rainfall, the temperature rose rapidly , is conducive Ectropis occurrence and hazards.

Second, prevention and treatment advice

1 , control indicators: per square meter Ectropis larvae 4-5 head , instantly drug prevention and treatment .

2, control Time: April 18 -4 at the end of 400 meters above sea level areas were late for 3-5 days. Serious tea interval of 5-6 days in a row with a good two drugs.

3, the control strategies :

( 1 ) Biological control : To ensure safety of the county green , resolutely implement green plant protection , public plant concept, in acres of tea plantations on medication should be used avermectin 80 ml of 2% or 0.5% bitter raw base 100 ml , to achieve both eradication of pests , and protection from predators a virtuous circle.

( 2 ) Chemical control : mu selection of efficient and low toxicity of 2.5% trifluoroacetic cyanuric chloride ( kung fu ) 120 ml or 100 ml of 2.5% bifenthrin .

Choose one of these agents , watered 45 kilograms per mu motorized plastic sprayer , hand sprayer watered 60 kilograms per mu , at 16:00 after a uniform spray. And after treatment interval 7-10 genius for picking.

Tobacco pesticide MRLs

MRLs is to regulate the amount of pesticide residues in tobacco defined targets. Even in strict accordance with good agricultural practices (good agricultural practice, gap) for tobacco production ,pressure sprayers  pesticide active ingredients and their degradation products are still somewhat in tobacco residues, it is necessary to set maximum residue limits .

Some farmers do not follow the recommended dose of pesticides and pesticide use , even the use of banned pesticides on tobacco use , it may cause more serious problem of pesticide residues in tobacco . Currently , tobacco and tobacco products in the countries to control pesticide mrl indicators are an important part of the quality of tobacco products has become one of the international market to buy tobacco evaluation and an important factor in the United States, Russia, Germany, France, Italy, Hungary, Spain , Croatia , Estonia , Malaysia and the Middle East and other 11 countries or regions of tobacco and tobacco products, as specified in the mrl. garden pressure sprayer Our Tobacco relevant administrative departments have organized research units to develop tobacco "Tobacco and tobacco products in the maximum pesticide residue limits ", and promulgated in due time .

China should attach importance to agricultural equipment multifaceted sustainable development

A sustainable agriculture and water-saving irrigation technology and equipment problems . Of water scarcity . Water per year 30 billion m3, drought-hit area of ​​20 million hm2, the country has 80 million rural drinking water. Therefore, we must find a way out from the water , develop water-saving agriculture. Currently, the promotion of water-saving irrigation technology and equipment has matured, but water-saving irrigation equipment, there are some issues to be resolved. First , China's water-saving irrigation machines and mobile machine nozzle, joint form basically the same , you can choose range of small, rotating nozzle uneven wear . Wind nozzles, special nozzles to be research and development . Secondly, micro-irrigation technology in the domestic micro sprinklers , drippers , various forms dropper with fewer species . System complete with control equipment , filters, fertilizer , injectors, and other key technology node blockage need to overcome . Third , water-saving devices , "three" low level , but also to further improve standards.

Two sustainable agriculture and land conservation technology and equipment problems . Of land conservation imminent. According to statistics, currently expanding desertification area has reached 1,533,000 square kilometers , accounting for 15.9% of the land area . Erosion surface increase, 39% of the country's total area ; land quality declining arable land 59% of phosphorus deficiency , 23% potassium ,chemical sprayer 14% lack both phosphorus and potassium , 30% nitrogen deficiency province 's arable land , China low-yielding fields representing about 70% of arable land ; land resources severely damaged due to various human factors , derelict land total 200 million acres ; national grassland each year 30 million mu to 4000 mu degradation , desertification grassland (50%) ; 70 % arid and semi -arid grassland . Nearly 10 years , the national forest area decreased by 23 ? 1% , the agricultural ecological environment deterioration , reduced water storage capacity . Land pollution is worsening . From industrial "three wastes " pollution , contaminated land 6,700,000 hm2; affected by acid rain harm agriculture 2,660,000 hm2; national industrial solid waste and municipal solid waste a total area of ​​5.36 million hm2, which accounted for farmland 40000 hm2. As well as from the pollution of agriculture itself , mainly excessive application of pesticides , resulting in changes in soil properties , soil fertility decline and so on.

To this end , research and development of grass and trees terracing of special machinery and equipment development project is imminent. Promotion and development of new ultra-low- volume spraying ( powder ) device , so that the liquid droplet diameter down to 15μm ~ 75μm, reduce pesticide use , improve the efficacy and control effect ; development of new agricultural film recycling machinery and equipment , prevention of pollution of agricultural plastic film .

Three dimensional cultivation of sustainable agriculture and technical equipment problems . Stereoscopic three-dimensional cultivation of agricultural cultivation , including three-dimensional cultivation, water power sprayer livestock integration , planting combination , courtyard economy mode. Machinery and equipment in this regard very little mechanization intercropping is a major problem , this is not caused by power machine and supporting tools ; farming raise land farming techniques and equipment developed much, much less be able to use ; courtyard economy is on the rise among , there is no typical mechanical equipment developed . Stereoscopic both sustainable agriculture cultivation technology and equipment needed for development , but also the "three rural" market need to develop products .

Flower remedy safety

Flowers pest control pests must first understand the cause , infection cycle and its ecological environment, grasp the hazards of the time, location, extent and other laws in order to remedy.

A non infectious disease medication ( 1 ) sunburn harm plants like fire in the middle upper leaves like , pale red, but no rain affected parts of the mold shaped . ( 2 ) water waterlogging can cause rot, easy to lodging . Frost damage seedling leaf edge first dry coke wrinkle volume , no rain affected parts of the mold shaped bark rupture. water power sprayer ( 3 ) of drought victims in the upper leaves wrinkles, drooping . ( 4 ) pollution damage leaves dirty , easy to wipe. Fertilizer damage shoots wilting , growth stagnation. ( 5 ) deficiency harm plant growth retardation , leaf deformation dull, dry from the bottom up along the blade off.
These diseases are physiological diseases, pesticides are not can and can only be solved by changing ecological conditions , but in conjunction with external fertilization to remedy the root .

(2) infectious disease medication ( 1 ) fungal disease often leaves white , rust powder, coal pollution , mold layer , plaques, rain spots back often fungal spores mold shaped . The disease can choose Zineb , Peronophythora spirits do routine prevention . In the peak of the disease , the available edifenphos , Amobam , tuzet , carbendazim , g Isoprothiolane used interchangeably , the dilution of : Powder 500-800 times liquid , cream or liquid 800-1000 times . ( 2 ) bacterial diseases mainly against rhizomes , corms , bulbs , tubers , etc. Affected parts of the dry conditions into a powder , high-temperature conditions into a water-soaked . Optional 200,000 units of the diseases of streptomycin 30 gram of water 50 kg pouring spout . ( 3 ) showed mosaic virus disease , dry spots , ringed , yellow leaves , deformity, arbuscular , upper leaves fall off . Optional oxytetracycline ,liquid sprayer viruses Spirit of 20 , dissolved in 12 kg of water poured or sprayed with 2.5 kg isatis boiled pouring spout .

You have mastered the method of preparation of pesticide yet

Should adopt the "second law " dilute pesticides.

( 1 ) diluted with water with a small amount of water pesticide pesticide formulation was diluted to a " mother liquor " , and then " mother liquor " diluted to the desired concentration .

( 2 ) mixed with soil , back pack sprayers sand and other pesticide applicator : should be diluted with a small amount of carrier ( fine soil, sand, solid fertilizers , etc. ) will be uniformly diluted pesticide formulations "Mother powder" , and then diluted to the desired amount .

Note dispensing safety . Preparation of pesticides should be away from residential areas , livestock barn and water places , with the use of agents with the distribution . Has been taken as far as possible with a good solution should be sealed spraying approach day spent the day with a good solution . On the rest of the pesticide should be installed after the closure safely stored in their original packaging may not be transferred to other packaging , such as beverage bottles or food packaging.

Amount of the cap can not be used with water with pesticides or dispensing barrel , home garden sprayer the barrel is not applied directly to the liquid containing water ditch , who can by hand or arm extended liquid, powder or granules stirring .

Knapsack sprayer use

1 To properly install the knapsack sprayer components. Check all connections for leaks, use, install water spray test, then loaded agents.

2 official use, the first Canadian Pharmacy, add water, the liquid's surface can not exceed the safe water line. Spraying before pulling the joystick more than 10 times, so that the barrel pressure up to operating pressure. Not use excessive force when pulling the joystick to avoid the gas chamber explosion.

3. The initial loading of liquid, because the gas chamber and spray bar contains water, the spray initial 2 to 3 minutes, the injected liquid concentration is low, it should pay attention to fill bottle sprayer to avoid affecting the pest control effect.

4 After work, should be poured barrel residual liquid, washed with water and pour dry, while checking the gas chamber without water, if water, to remove the water connector release water.

5 If you do not use the spray near term, the main components should be clean, dry bottles in a cool dry place. If the long-term need, all metal parts have to be buttered, to prevent rust.

DOP and DBP what is the difference

DOP Dioctyl phthalate
DBP Dibutyl phthalate
DBP volatile large plasticizing effect is not as DOP,back pack sprayer  of course not, at least not completely substitute DOP. Different oxides and indicators of DBP high medical aspect is definitely not in use
Phthalate (DOP)

Nature: generally colorless transparent oily liquid, insoluble in water, soluble in methanol, ethanol, ether and other organic solvents. Mainly used as PVC plasticizers.

By breathing, eating and skin contact directly into the human and animal body. The toxicity of the molecule with the number of carbon atoms in alcohol increases.

Butyl ester phthalate (DBP)

Properties: colorless,household sprayer  odorless and transparent.

Purpose: To plasticizers, non-toxic. PVC is mainly used for secondary plasticizer DOP comparison purposes, DBP and easy migration, often used in conjunction with DOP, a plasticizer is added in order to reduce costs.

How to Grow Cassia and pest control

Cassia prefer warm, humid climate, soil strict, slightly barren in places where it can grow. Drained, deep soil, loose sandy loam optimum planting can also be used in sporadic land planted courtyard.
1, pest control: ⑴ main ring rot disease is, in the incidence of spraying Bordeaux mixture 1:1:200, serious lime sulfur spray 0.3 Baume for prevention and treatment. ⑵ aphids more serious harm in the seedling stage, 40% of available times or dimethoate 2000 1:10 tobacco, lime for prevention and treatment. ⑶ morning liming can prevent slugs.
2, Harvest: bottle sprayer year 10 months late, Cassia fruit ripening. When the pods from green to brown, use sickle cut off from the base of the plants, placed drying yard threshing season, cleanse impurities, select full, no worm for the species.
3, sowing: Cassia by seed propagation, the South in the spring or summer, the northern front in Guyu. Selected full grain seeds with 50 ℃ warm water soak 1 day and night, to make it fully swelling, remove and dry surface moisture can be planted. In drilling is appropriate to open 6 cm spacing 50-70 cm deep ditch, the seeds evenly thrown into the trench, and then the casing 3 cm, slightly compacted, electric agricultural sprayers about 10 days after sowing may emerge. Height 3-6 cm Time seedlings, the seedlings Ruomiao or too dense pull; height 10-13 cm, combined tillage weed, plant spacing of 30 cm by singling. In case of drought, proper watering.
4, fertilization: Cassia roots, rhizobia, nitrogen fixation can play without a lot of fertilization. ⑴ height 10 cm when applied per acre thin human waste 1,000 kg to promote seedling growth. ⑵ 6 mid Zaishi human waste 1000 kg.