论文部分内容阅读
中卫县种植绿肥比较普遍,尤以镇罗公社历史悠久,经验丰富。1966年以来,随着水稻品种的更新,插秧时间的提前等栽培制度的改革,与绿肥争地的矛盾突出,绿肥面积由原来70％减少到30％。近几年来,他们又采取措施恢复种植隔年苜蓿绿肥。该社每年种植水稻一万亩左右,其中京引39号、早丰、矮丰等中晚熟品种占水稻面积的80％以上,虽然插秧时间要求早,但是苜蓿绿肥仍有很大发展。据1973年统计,苜蓿绿肥为
Zhongwei County, planting green manure more common, especially the town of Luo commune has a long history and rich experience. Since 1966, with the reform of rice varieties, the advance of planting time and other cultivation systems, the contradiction between green manure and land competition has been prominent. The area of green manure has been reduced from 70% to 30%. In recent years, they have also taken measures to restore alfalfa green manure from the next year. The agency annually grows about 10,000 mu of rice, of which Beijing cited No. 39, such as early abundance, short abundance of late-maturing varieties of rice account for more than 80% of the rice area, although the time required for planting early, but alfalfa green manure is still great development. According to 1973 statistics, alfalfa green manure