| Along the Great Wall located in an arid and semi-arid regions,the ecological conditionsharsh, natural rainfall scarce and distribution. Spring green beans is the important food andeconomic crops,but cultivation technique relatively backward,scientific research strengthweakness,,increasing yield had been severely restricted by the ecological and productionfactors.This study under different furrow and mulched ridge on water moisture conversation andwater saving technique,fertilizer and rational planting density and so on advanced cultivationtechnique as the foundation, united area production conditions and production level,forming the new drought-resistant water saving system of cultivation techniques, providingscientific theory basis for green beans increases in yield and income.1.A field experiment (2010–2011) was conducted at the Shenmu in Shaanxi Province ofChina to determine the effects of ridge to furrow film on soil moisture conservation andwater-saving benefits of spring mung bean field in semiarid areas. DX1,DX2,DX3,DX4andDX5cultivation patterns of furrow-ridge film were designed and soil moisture,yield,wateruse efficiency and economic benefits of spring mung bean were analyzed for two years. Theresults showed that2-year average soil water storage in0-100cm soil layers were10.61,8.05,7.96,22.76and17.68mm. Grain yield were4.15%,0.63%,15.09%,24.53%and16.98%respectively, higher than that of CK in2010, and which were similar to in2011,while the latter overall less than the former. Comparing with CK,2-year average WUEincreased by38.19%,30.03%,33.53%,68.80%and53.94%,net return increased by43.11%,28.99%,41.16%,78.92%and64.79%respectively, and water-saving rates of unitgrain produce increased by27.30%,22.73%,25.12%,40.38%and34.40%respectively,andwater-saving benefits increased by407.67,339.48,375.17,603.12and513.85yuan/hm~2,respectively. Results of this study indicated that the DX4had obvious effect of keepingmoisture,and which is suitable in semiarid areas and similar ecological area.2."3414" fertilizer effect test is the basic way of to obtain a variety of crops the bestfertilizing quantity and proportion. The test results show that green bean yield have very significantly the return of the relationship with N,P,K.Under local soil conditions, mungbean N,P,K the biggest fertilizing amout were N:35.59kg/hm~2, P205:32.23kg/hm~2, K2O:72.11kg/hm~2,maximum yield1595.69kg/hm~2,the best fertilizing amout N:42.61kg/hm~2,P205:19.47kg/hm~2,K2O:85.28kg/hm~2, the best economic yield of1606.15.kg/hm~2.3.Through the different density gradient test, research appropriate density and groupdynamics development process, provide the theory basis for green beans increasingefficiency planting technology. Research shows that different planting density gradient mungbean yield and emergence of seedling,flowering,maturing and growth period have significantdifference.Deal with67500plants/hm~2for two consecutive annual yield is the highest,emergence of seedling,flowering,maturing and growth period are1-3days in advance. |
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