我省种植绿肥由来已久,据史书记载,用苜蓿作饲料,倒茬肥土,已有二千年左右历史。在陇东原区,素有麦后复种芸荞翻压作绿肥的习惯;泾河川用黑豆作绿肥;渭河上游南北丘陵山区,推行“草田轮作”,农牧结合,综合利用,已有30余年历史;香豆子、箭舌豌豆始种于我省,现已在全国不少省区推广种植。我队属井泉灌区。近年来随着耕作改制的发展,在种植绿肥上,大搞“见缝插种”,“十边种植”,充分利用了季节和空间,较好地解决了因耕作改制带来的肥料不足的矛盾。种植形式见缝插针有以下几种类型:1.改小麦单种为粮肥套种:在距村较远、土层薄的土段,结合小麦灌头水套种草木樨,或浇二水时套种毛叶苕子、箭舌豌豆等绿肥,实现夏收一熟麦,秋收一茬肥。2.改玉米单种为粮肥间作:单种玉米通常行宽为 Green manure has long been planted in our province, according to historical records, with alfalfa for feed, inverted stubble soil, about 2000 years of history. In the eastern part of the Longdong Plain, there is a habit of wheat and wheat multiple cropping for green manuring; Jinghe River uses black beans as green manure; the upper reaches of the Weihe River in the hilly mountainous areas in North and South China have implemented the strategy of “rotation of the grass field” and the integration of agriculture and animal husbandry for more than 30 years History; Coucou beans, arrow tongue peas were planted in our province, now in many provinces and autonomous regions to promote planting. I team is Jingquan Irrigation District. In recent years, with the development of cultivation and reformation, planting green manure vigorously pursues planting seeds and ten sown plants and makes full use of the season and space to better solve the problem of inadequate fertilizers caused by farming and reorganization contradiction. Planting the form See sewing needles have the following types: 1 change wheat single species for fertilizer interplanting: far in the village, soil thin soil section, combined with wheat irrigation water intercropping grass clogs, Ye Shizi, arrow tongue peas and other green manure, to achieve summer harvest a cooked wheat, harvest a crop of autumn fertilizer. 2. To change a single corn grain and fertilizer intercropping: a single corn is usually the line width