论文部分内容阅读
目前农田施用的化学氮肥,多采用撒施、泼施或灌施的方法,浪费损失很大,尤其是占氮肥产量半数以上的碳酸氢铵、氨水等,在高温多雨的条件下,表施的肥分容易挥发流失,使肥效大为降低,一般利用率仅有30％左右。如施得不当,还易引起烧苗,造成减产。这是当前生产上必须研究解决的问题。 1974年下半年开始,我省在中国科学院南京土壤研究所的协助下,开展了水稻碳酸氢铵粒肥的群众性科学实验活动,两年多来获得了
At present, the chemical nitrogenous fertilizer used in farmland is mostly applied by means of sprinkling, sprinkling or applying, which results in great loss of waste, especially ammonium bicarbonate and ammonia which account for more than half of the nitrogenous fertilizer production. Under high temperature and rainy conditions, Fertilizer easily volatile loss, greatly reduced fertilizer efficiency, the general utilization rate of only about 30%. Such as improper facilities, but also easily cause burning seedlings, resulting in reduced production. This is the current production must be studied to solve the problem. Beginning of the second half of 1974, our province, with the assistance of Nanjing Institute of Soil Science, Chinese Academy of Sciences, carried out a mass scientific experiment on rice ammonium bicarbonate fertilizer and obtained more than two years’ experience