Pesticide spraying techniques

Spraying pesticides to control pests in many ways, can generally be sprayed and how much ( ie, the level of capacity ) , pesticide formulation types ( liquid, powder, etc. ) , as well as spray atomization principle applied to cloth method for classification. Pesticide Science, technology used essence , is to improve the pesticide on the target (i.e. target ) on the deposition rate , lower or regions in the non- target deposition , adopt the advanced application techniques to reduce the amount of pesticide applied to the minimum effective dose , maximize the effective utilization of pesticides , while minimizing pesticide application personnel and the environment against pollution .

Modern technology development direction pesticide use mainly traditional high-volume low-concentration spray high concentration to low volume spray method development ; big droplet spray fine mist spray to develop . Droplet distribution density is related to the effect of an important factor in prevention , per square centimeter droplet on the surface 20 can achieve the desired control effect. The same amount of liquid, if the droplet size by half , and the resulting 8 -fold increase the number of droplets . High concentrations of low-volume spray of fine droplets in a significant increase effective utilization of pesticides , while also improving efficiency, reduce labor intensity , saving water resources. And China is currently the most widely used high-capacity spray or spray method , tend to wet the crop to a " drip drop drug " phenomenon is not only wasteful , but can not reach a better control effect.
One , knapsack sprayer application techniques . Sprayer our current annual production capacity of 800 million units , brand , style a lot, but are of the same type , in particular, is just a tangential nozzle centrifugal kind of completely different different crops suited to control pests needs. With the domestic market development backpack water sprayer , high-grade , effort, medicine section of the new sprayer has emerged as a variety of spray guard card , configure all good atomization effect , is an ideal plant protection machinery products. Using manual sprayer spraying should pay attention to the following questions:
1, select non-drip phenomenon , good spray atomization , droplet density in guarantee case , to minimize the amount of spray . Prohibited the nozzle removed, and take rain France spraying.
2 , to strengthen the pesticide on crops wet adhesion , can add a small amount of liquid detergent and other types of wetlands development agent.
3, for different crops in different pests , use of different spraying parts. Currently widely used in tangential centrifugal nozzle, spray because of its large amount of structural relationships , the error is also large , uneven distribution , can only extensive pesticide spraying , no longer meet the technical requirements of the scientific use of pesticides , to gradually promote the use of vortex core or vortex -piece nozzle. Fan nozzle fog droplet distribution, spray can avoid re-spray leak phenomenon, spraying herbicides should vigorously promote the use of fan fog nozzle.
4, to change the current direction of travel along the right and left common bilateral "Z" shaped cross chemical sprayer spray habits, promote downwind side "Z" shaped spray application personnel to ensure that the area where no drugs area. Fog nozzle with a fan , you should take unilateral parallel advance of France spray nozzle swings should be avoided .