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我省二晚肥料不足,特别是有机肥源严重缺乏,难以满足二晚增产和培肥地力的要求。六十年代起,曾大力提倡推广夏季绿肥,但由于存在与农作物争地、争肥、争工等矛盾以及栽培、留种等技术问题,至今尚无法广泛应用于生产。1974年后,不少社、队大面积推广稻草还田,力求解决集约农作下的培肥改土问题,并已取得初步成效。但因稻草还田在其分解过程中会产生有毒物质和出现水稻苗期脱氮等现象。因此,有必要进行试验研究,以求解决。据分析,每百斤稻草含全氮0.586％,五氧化二磷0.165％,氧化钾1.97％,有机碳36％,此外还含有硅、钙、镁等元素。按我省水稻高产水平
Second night in our province, lack of fertilizer, especially a serious shortage of organic fertilizer, it is difficult to meet the requirements of two nights yield and fertility. Since the 1960s, the promotion of summer green manures has been vigorously promoted. However, due to the existing technical problems such as disputes over crops, fighting over fertility and labor disputes, as well as cultivation and seed-saving technologies, it is still not widely used in production. After 1974, quite a number of social groups and teams popularized the use of straw in large areas and sought to solve the problem of soil improvement and fertilization under intensified farming and achieved initial success. However, due to straw in the decomposition process will produce toxic substances and the emergence of rice seedling denitrification and so on. Therefore, it is necessary to carry out experimental research in order to solve it. According to the analysis, per kilogram of straw contains 0.586% of total nitrogen, phosphorus pentoxide 0.165%, potassium 1.97%, organic carbon 36%, in addition also contains silicon, calcium, magnesium and other elements. According to the high level of rice yield in our province