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丰产单季晚稻田内套播紫云英,鲜草产量很不稳定.1981年秋在单季稻茬耕翻晚播条件下种植早熟毛苕、大荚箭豌、地中海三叶草及紫云英,鲜草和干物产量均以早熟毛苕为最高.1982年秋播继续对早熟毛苕在单季晚稻茬进行分期播种试验,并与正常播期的紫云英相比较.试验地为本所黄泥土,前作单晚苏粳2号.参试绿肥早熟毛苕由江苏徐淮地区徐州农科所提供;紫云英为茜墩种.收稻前各播期均用套播,收稻后,浅整灭茬播种(表1).
In the autumn of 1981, under the conditions of single-cropping rice with late rotation and sowing, planting early mature Rana tabaci, big pod pea, Mediterranean clover and milk vetch, fresh grass and Dry matter yield are the highest precocious catfish.During the autumn of 1982 continue to precocious pomfret in a single season late rice stubble sowing trials, and compared with the normal sowing time.Experiment for the local yellow soil, the former as a single Late Sujing 2. Participant Green Muddy hair Xuzhou by Jiangsu Xuhuai Xuzhou Institute of Agriculture provided; Aster Yunni species. Receive rice before sowing all sowing, after receiving rice, shallow stubble sowing (Table 1).