Fertilizer dosage should be appropriate

Can be used as basal fertilizer , seed fertilizer and top dressing . Than the amount used as a base fertilizer nitrogen, phosphorus and potassium fertilizers smaller. Zinc ( seven water zinc sulfate ) in food crops per acre with 1 to 2 kg , manganese fertilizer ( manganese sulfate ) with 2 to 4 kg , boron ( borax ) with 0.4 to 0.5 kg , molybdenum fertilizer ( ammonium ) only 10 to 25 grams , usually in a serious lack of certain micronutrients plots before applying basal . As with less, and the large number of elements can be fertilizers, soil or organic fertilizer mixed use , or dissolved in water , irrigation sprayer sprayed on organic fertilizer , organic fertilizer along with the application . Fertilizer to seed dressing or fertilizer is mainly used for soaking . Per kilogram of seed dressing with Zn 5 grams or molybdenum fertilizer 2 to 3 grams , with the amount of water-soluble , spray with a sprayer on the seeds , or seeds in the same solution and the solution is stirred , dry sowing. Soaking can be from 0.02% to 0.05% zinc sulfate or borax solution , soaking time of wheat , corn 6 to 12 hours can be soaked rice 1 to 2 nights. Dressing can be applied to the soil , but more common is spraying. Usually 0.1% to 0.3% borax or zinc sulfate heptahydrate , 0.1% to 0.2% of boric acid , or 0.05 % to 0.1 % of the ammonium molybdate solution sprayed twice over.

For annual crops in the seedling to the flowering stage spray every 7 to 10 days time . Fruit trees in bud and flowering water power sprayer spraying. Water-soluble fertilizer can be used as basic fertilizer, seed fertilizer and top dressing , sparingly soluble fertilizer commonly used as base fertilizer. The amount and concentration of fertilizer is not tested in the case can not be arbitrarily increased to avoid poison crops.