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水田使用化学氮素肥料,因挥发、土层渗漏、排水、脱氮作用而引起肥分损失,降低肥效。如果把肥料施入土层内部就可以避免脱氮而肥分损失。根据省肥料工作会议的要求,1975年起,我们选择了具有代表性的农场、生产大队组成化肥深施试验协作组,统一试验方案。供试肥料:以硫酸铵、氯化铵为主,结合尿素、氨水、碳酸氢铵。分别在青紫泥、小粉
The use of chemical nitrogen fertilizer paddy field, due to evaporation, soil leakage, drainage, denitrification caused by the loss of fertilizer, reducing fertilizer efficiency. Fertilizers can be avoided if they are applied inside the soil. According to the requirements of the provincial fertilizers working conference, since 1975, we have chosen a representative farm, the production brigade composed of deep fertilization experimental cooperative group, a unified experimental program. Test fertilizer: ammonium sulfate, ammonium chloride-based, combined with urea, ammonia, ammonium bicarbonate. Respectively in purple clay, small powder