1 avoid surface application. Ammonium bicarbonate applied to surface soil fertility to the loss of 25% to 30%

1 avoid surface application. Ammonium bicarbonate applied to surface soil fertility to the loss of 25% to 30%. According to the determination, when the air temperature is 29 DEG C when applied to the soil surface of ammonium bicarbonate within 12 hours of nitrogen losses of 8.9% and 8 to 10 cm deep fertilizing soil cover, less than 1% loss within 12 hours. The general and deep application of ammonium bicarbonate soil, than the soil surface application improve fertilizer utilization rate of more than 20%.
2 avoid dry soil application. The soil is dry, even deep application coverage can not be dissolved and ammonium adsorbed by soil and crop absorption and utilization. Only in the soil with certain water content under the condition of application of ammonium bicarbonate to dissolved timely, reduce the loss.
3 avoid making a kind of fertilizer. The ammonia produced in the decomposition process has a strong killing effect on seed embryo and seed bud, which seriously affects the germination and emergence of seeds. Therefore. Not dressing seed.
4 avoid contact with crop stems and leaves. Using ammonium bicarbonate as top dressing, a little carelessness will hurt the crop stem leaf smoked, light foot leaves red, yellow, heavy like fire. For the best rice ball made of topdressing fertilizer, and deep application; if the applicator should mix 2 ~ 3 times of the dry fine soil, in cloudy or sunny after 4 p.m., Tian face of the need to maintain 3 ~ 5 cm layer, side edge scattering cultivator. For dry land crop fertilizer, should first open ditch, hole, and then add water pouring or mixed with soil applied ditch, hole in the side of the side cover soil fertilizer.

5 avoid and alkaline fertilizer mix. Ammonium bicarbonate and plant ash, lime kiln, ash, calcium magnesium phosphate and other alkaline substances mixed, will immediately produce a chemical reaction, ran out of large ammonia caused by nitrogen loss, reduce fertilizer, so it should be separated from the application, before and after every 2 to 3 days.
6 bogey and superphosphate mixed after overnight application. The mixed application of ammonium bicarbonate and calcium superphosphate, although separately has good effect, but should be immediately under application after mixing, should not be mixed after a long time, not overnight. This is because the hygroscopic superphosphate strong, will make compost into slurry or caking, unfavorable application, and ammonium bicarbonate is volatile, long easy loss.