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紫云英在稻田留种,有4个突出的缺点:(1)产种量低,亩产种子仅30—50斤;(2)占用了一部分稻田,影响粮食总产;(3)因稻田地下水位高,加之开春后雨水多,湿度大,因而紫云英病害多;(4)收获紫云英种子时正值梅雨季节,易发芽、霉烂。旱土秋播紫云英,可克服以上弊病,但播种时正值秋旱,土壤水分少,不易发芽出苗。为克服上述两种留种方法的缺陷,我所于1973—1979年连续进行了紫云英旱土春播留种技术的研究,获得成功,并获省科技成果奖。1981年全地区种植面积达600亩。
Astragalus inoculation in the paddy field, there are four outstanding shortcomings: (1) low yield, only 30-50 kg per mu of seeds; (2) occupy part of the rice fields, affecting the total grain output; (3) High groundwater level, coupled with the spring after the rain and more humidity, and thus more diseases purple asparagus; (4) harvested aspartame seed season, easy to germinate, rotten. Dry autumn sowing Vetch can overcome the above shortcomings, but when planting is autumn drought, less soil moisture, less likely to germinate. In order to overcome the shortcomings of the above two methods of seed-keeping, I conducted a succession of researches on the technique of spring-sowing and seed-keeping of Zi-Yun-Ying dry soil from 1973 to 1979, and won the provincial scientific and technological achievement award. In 1981 the entire area planted area amounts to 600 mus.