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1985～1987年的绿肥定位试验结果表明:利用休闲地及作物后茬的水热资源种植绿肥箭舌碗豆,亩产鲜草2117.4～2569.2公斤,春播处理高达4937.5公斤;每亩秋季翻压绿肥鲜草2500～5000公斤,可使土壤耕层有机质含量提高0.22～0.37%,全氮含量增加O.0O5～O.0O8％;种植绿肥后,土壤容重比对照降低O.071～O.122克/厘米~3。孔隙度由44.37％和39.83％增加到48.65～51.35％;土壤微生物数量及呼吸强度、硝态氮、硝化强度都明显高于休闲地与青稞连作;绿肥后茬青棵比休闲地增产18.5～32.5％,较青稞连作增产39.5～56.1％,具有明显的培肥改土作用与增产效果。
1985 ~ 1987 green manure positioning test results show that: the use of recreational and crop stubble of water and heat resources planted green tea bowls beans, per mu fresh grass 2117.4 ~ 2569.2 kg, spring sowing up to 4937.5 kg; Fresh grass 2500 ~ 5000 kg, can make soil organic matter content increased 0.22 ~ 0.37%, total nitrogen content increased O.0O5 ~ O.0O8%; planting green manure, soil bulk density than the control to reduce O.071 ~ O.122 g / Cm ~ 3. The porosity increased from 44.37% and 39.83% to 48.65 ~ 51.35%. The number of soil microbes, respiration rate, nitrate nitrogen and nitrification intensity were all significantly higher than those of leisurely cultivated with barley. The yield of green manure increased 18.5 ~ 32.5 %, Continuous cropping of barley increased by 39.5 ~ 56.1%, with obvious effects of fertilizing soil and increasing yield.