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上海地区化肥用量日益增多,近五年平均每亩农田年用量达296斤,其中氮肥占240斤,折合氮素36斤,比全国平均水平高约4倍。为了经济合理地施用化肥,降低农本,增产增收,市化肥协作试验网,于1980～1981年在郊区不同的土壤上,进行了三麦、油菜、水稻、棉花合理用肥的多点试验,现将三麦氮肥适宜用量研究结果汇总如下,以供参考。一、试验方法三麦氮素化肥用量试验共25个(大元麦16、小麦9)。试验处理见表1。随机排列,重复三次,小区面积0.04～0.1亩。基
In the past five years, the average annual amount of farmland per mu has reached 296 kg, of which 240 kg are nitrogenous fertilizers, equivalent to 36 kg of nitrogen, about 4 times higher than the national average. In order to economically and reasonably use chemical fertilizers, reduce agricultural capital, increase production and increase incomes, the Municipal Fertilizer Cooperative Experiment Network carried out multi-point experiments on the rational use of fertilizer of Sanmai, Rapeseed, rice and cotton in different suburbs from 1980 to 1981, Now three wheat nitrogen fertilizer appropriate amount of research results are summarized below for reference. First, the test method Three wort nitrogen fertilizer test a total of 25 (Damai Mai 16, wheat 9). Test treatment in Table 1. Random arrangement, repeated three times, the plot area of 0.04 to 0.1 acres. base