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我省冬小麦分布广泛,肥力条件差异较大,要进一步增加产量,提高经济效益,就必须选择适宜的化肥品种,确定氮磷钾的配合比例和经济施肥量.对于类似问题,近年已有不少研究,许多人用土壤养分含量作为确定作物施肥方案的依据.我们于1981—1982年,在全省30多个县的91个基点上进行了协作试验,分析了施肥效应和经济效益,并作了小麦推荐施肥检索法的尝试。试验方法用1965年联合国粮农组织 R.D.Nargin 提出的以氮肥、磷肥为主的8项区组设计,即:(?)+N_2P_2+N_2P_2K_1,重复4次。其中 N_1是亩施10斤纯氮,N_2是亩施20斤;p_1是亩施
The winter wheat in our province is widely distributed and the conditions of fertility are quite different. To further increase the output and increase the economic benefits, we must select appropriate varieties of fertilizers and determine the proportion of NPK and economic fertilization. For similar problems, in recent years, many Research, many people use the soil nutrient content as a basis for determining the program of crop fertilization.We in 1981-1982, in the province’s more than 30 counties 91 basis points conducted a collaborative experiment, analysis of fertilizer and economic benefits, and for Attempt to recommend fertilization retrieval method in wheat. The test method is based on the design of 8 blocks which are mainly composed of nitrogen fertilizer and phosphate fertilizer proposed by R.D.Nargin of the UN Food and Agriculture Organization in 1965, namely: (?) + N2P2 + N2P2K1 and repeated for 4 times. Among them, N_1 is 10 kg of pure nitrogen of Mushi and N_2 is 20 kg of Mushi; p_1 is Mushi