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冬绿肥苕子和金花菜苗期耐盐性弱,在盐土上种植,出苗、全苗困难,生长后期,茎蔓互相牵连覆盖,下部通风透光不良,湿度加大,霉烂加重,个体与群体之间的矛盾表现突出,这是苕子和金花菜绿肥高产的主要限制因素。试验研究与生产实践证明,利用非豆科绿肥黑麦草、油菜的抗盐耐寒的特点,与豆科绿肥作物苕子或金花菜混种,就可以改善苕子或金花菜在单种中出苗与生长的不利因素,获得了良好效果。一般比苕子,金花菜单种可增产20～30％,群众说:“绿肥搭配混种,地上部分三层楼,地下部分三层根,松土肥田效果好”。近几年来,江苏地区绿肥混种面积已达到70万亩。本文根据试验研究和大田调查结果就绿肥混种的增产效果,改土作用混种技术等问题分述于下。
Salt tolerance of seedlings of winter green manure and potted cabbage is weak, and they are planted in seedling, seedling, seedling, and seedlings in later stage of growth. The stalk and vine are implicated in each other, and the lower part is poor in ventilation and light, humidity is increased, mildew is worsened, The contradiction between the performance of prominent, which is the prickly heat and Cauliflower main yield-limiting factors. Experimental research and production practice have proved that the use of non-leguminous green manure ryegrass, rapeseed salt cold hardy characteristics, and leguminous green manure crops razor cladium or ginseng, you can improve the prickly heat or the ginseng in a single emergence and The unfavorable factors of growth have yielded good results. Generally than prickly heat, Golden Flower menu species can increase 20 to 30%, the masses said: “Green manure mixed with three parts of the ground floor, underground part of the three roots, loose soil fertile field effect is good.” In recent years, the area of green manure mixed in Jiangsu Province has reached 70 million mu. This article based on experimental research and field survey results on the mixed effect of green manure production, soil modification technology and other issues described below.