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今年,农业部把化肥深施作为一项节本增效的农业技术在全国重点推广,改变我国化肥施用技术落后的状况,提高化肥的利用率。据中国农科院土肥所进行的研究表明:碳酸氢铵、尿素深施比表施,其铵态氮利用率分别由27％和37％提高到58％和50％,磷肥和钾肥深施也可以减少风蚀,增长肥效,提高其利用率,取得增产效果。我省庆阳地区采用机械垄沟种植技术,比肥深施,化肥利用率提高20％,有效分蘖增加86％,
This year, the Ministry of Agriculture has deepened the use of chemical fertilizers as a cost-effective agricultural technology promotion in the country, changing the backward technology of chemical fertilizers in China and improving the utilization of chemical fertilizers. According to the research carried out by the Chinese Academy of Agricultural Sciences soil and fertilizers, ammonium bicarbonate and urea deep application rate, ammonium nitrogen utilization rate increased from 27% and 37% to 58% and 50%, phosphate and potassium fertilizer application It can reduce wind erosion, increase fertilizer efficiency, increase its utilization rate and achieve yield increase. Qingyang area in our province using mechanical furrow planting technology, deeper than fertilizer, fertilizer utilization increased by 20%, effective tiller increased by 86%