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予东大面积晚茬地(红薯茬)播种苕子,青草产量很低,掩青后,没有明显的增产效果。针对这一问题,从1974到1978年在中牟县两个公社三个大队进行了调查和试验,为晚茬地发展绿肥,提供了一个较为有效的办法。多年试验结果:在晚茬地上,11月上旬播种苕子,第二年春亩产青草三、四千斤,掩青后当年增产粮食二、三百斤。具体办法是:一、平地作畦,浇足水分:豫东地区,晚茬地大部分是红薯地,少部分是晚稻茬,
Large areas of late cropping the East (sweet potato stubble) sowing seeds, grass yield is very low, cover the green, no significant increase in yield. In response to this problem, from 1974 to 1978 in Zhongmu County, two communes brigade conducted a survey and test for the late cropland development of green manure, provides a more effective way. Years of test results: In the late cropping, razor seeds were sowed in early November, and the spring grasses produced three or four kilos of spring grasses in the second year. After that, the grain output was increased by two or three hundred jin. Specific ways are: First, the flat ground to stir, pour enough water: the eastern part of Henan, most of the late cropland of sweet potato, a small part of the late rice stubble,