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宁夏银南地区地处银川平原引黄灌区,为一年稻、一年旱的轮作区.过去素有种植稻田绿肥的习惯.近几年来,由于越冬绿肥(如苜蓿)和本地春播绿肥(如扁豆子)生长不好,产草量降低;再加某些地区麦收后复种糜子,挤掉了越冬绿肥的面积等,致使绿肥面积逐渐减少,而改用撒苦豆子或施土粪等作为稻田底肥.苦豆子虽然是很好的绿肥,但是却要化费生产队大量资金,如吴忠县古城三队1972年光买苦豆子种子一项,就占总开支的20%以上,增加了生产成本,降低了社员收入.根据这种情况,我们在吴忠县陈元滩公社陈滩五队的沙质河滩地稻旱轮作田上,进行了春播绿肥对比试验,以便探索适于本地种植的速生、高产绿肥新品种,为水稻开辟绿肥肥源.试验结果表明,有几种春播绿肥新品种(如箭筈豌豆、毛叶
Yinnan area of Ningxia is located in the Yellow River irrigated area of Yinchuan Plain, which is a year-long paddy crop with one year of dry rotation. In the past, there was a habit of planting green manures in paddy fields. In recent years, due to overwintering green manure (such as alfalfa) Lentils) poor growth, reducing the amount of grass production; plus some areas after the wheat harvest compound Millet, squeezed out the area of winter green manure, etc., resulting in a gradual reduction of green manure area, Although Sophora alopecuroides is a very good green manure, it costs a large amount of money for the production team. For example, Wuzhong County, an ancient city’s third team, purchased one of the seeds of bitter beans in 1972, accounting for more than 20% of the total expenditure, which increased the production cost , Reducing the income of members.According to this situation, we in Wuzhong County Chen Yuan Tan commune Chen five teams on the sandy beach of paddy dry crop field, conducted a spring sowing green manure comparison test, in order to explore suitable for local planting of fast-growing, high yield New varieties of green manure open green manure for rice.Experimental results show that there are several new varieties of spring sowing green manure (such as arrowroot pea,