免耕对不同覆盖条件下豌豆产量和经济效益的影响

No-till is one important measures of conservation tillage. It can reduce the cost of agricultural inputs to increase yields， protect the soil， reduce water and soil erosion and well in the economic and ecological benefits. Effects of no- till in the different cover on conditions on crop yield in different cover on conditions were studied in dry land in the middle of the Loess Plateau， DingXi. Results showed that under the no-till form， Pea general increase output， agricultural input costs have decreased significantly ， the average saves 810 Yuan / hm2; Under the different cover condition， the net income separately increases 1175.45， 1682.70， 968.25 Yuan / hm2， the economic efficiency is obvious. Especially in exempts ploughs does not cover under the cultivation form， agricultural cost investment least， only is 1006.50 Yuan / hm2， the economic efficiency rate reaches actually reaches as high as 167.80%， the economic efficiency is extremely obvious.