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在砂姜黑土地区,随着生产水平和生产投资的普遍提高,在重视合理增施磷肥的同时,如何合理分配和适量配合施用氮肥,对扩大施肥面积,争取均衡增产,进一步提高氮肥施用的经济效益,是当前农业生产中极待解决的课题。为此,1981—1983年对砂姜黑土的氮肥经济用量进行了研究。本文仅就小麦的氮肥经济用量,试作初步探讨.
In Shajiang black soil area, with the general increase of production level and production investment, it is necessary to pay more attention to the rational application of phosphate fertilizer and how to rationally allocate and properly apply nitrogen fertilizer to expand the area of fertilizer application, strive for a balanced production increase and further increase the economy of nitrogen fertilizer application Benefit, is currently the issue of agricultural production to be solved. To this end, 1981-1983 on the Shajiang black soil nitrogen fertilizer economic use were studied. This article only on the economic use of nitrogen fertilizer, a preliminary trial.