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在种地养地结合培肥地力上,多年来采用和推广的草田轮作、苜蓿离区轮作、草木樨、油菜绿肥以及增施厩肥、秸杆还田等措施,这些都可因地制宜应用,但从综合考虑,复播油葵绿肥更值得重视推广。理由为:1.复播油葵绿肥鲜重产量最高。一九八一年笔者在石河子总场三分场四连南3号地167亩麦茬地上于7月28日采用机力同期复播油葵28.5亩,油菜93亩,黄豆28.5亩,进行对比试验,于9月27日耕翻前同期调查结果,油葵产量最高。仅地上部分油葵亩产(鲜重)8,880斤,相当油菜的2.72倍,黄豆的8.88倍。2.油葵绿肥肥效高。种油葵增加了土壤有机质,提高了含磷量,调解氮磷比例,改善了土壤养分状况。据复播油葵绿肥对速效磷
In the field of fertility and fertility, the adoption and promotion of grassland rotation for many years, alfalfa rotation from the district, vegetation, rapeseed manure and the additional manure, straw and other measures, these can be adapted to local conditions, but from Taken together, the compound sowing oil sunflower more worthy of attention. The reasons are: 1. Compound sunflower Kwai fresh weight and yield the highest. In 1981, the author used 28.5 acres of oil sunflowers, 93 acres of rapeseed and 28.5 acres of soybeans during the same period of 167 hectares of stubble on 167 hectares of No.3 in Sihenan, Shihezi, On September 27, the result of the previous plow survey showed that the highest yield of oil sunflower was produced. Only the top part of oil sunflower per mu (fresh weight) 8,880 pounds, 2.72 times the equivalent of rapeseed, soybean 8.88 times. 2. Sunflower Green fertilizer high efficiency. Oil sunflower increased soil organic matter, increased phosphorus content, adjusting the proportion of nitrogen and phosphorus, improve soil nutrient status. According to compound oil sunflower green manure available phosphorus