Effect of Sweet Corn Intercropping Density in Furrows on Sweet Potato Yield and Benefit Analysis
To alleviate field competition between sweet potato and corn in the Shangluo area,fully utilize light,heat,water,and fertilizer resources,and further improve yield and benefits per unit of farmland,sweet potato Shangshu 19 and sweet corn Suketian 1506 are taken as the research objects.Shangshu 19 is cultivated using the"horizontal cultivation on large ridge by double row"method,and Suketian 1506 is intercropped in the furrows,so as to study the the effects of 4 different density treatments of Suketian 1506 on the yield of Shangshu 19 and screen out the density treatment with the best comprehensive benefit.The results show that as the density of intercropped Suketian 1506 increases,the number of commercial ears in upper position of the corn plant also increases(P<0.01),those in the lower increase first and then decrease(P<0.01),and the yield of Shangshu19 decreases(P<0.01).Based on the number of harvested commercial ears,the density of Suketian 1506 should not exceed 889 plants/667 m2.Based on the analysis of comprehensive net income,it is maximized at a density of 667 plants/667 m2,accordingly,the yield of sweet potato is 2 801.4 kg,the number of commercial ears of sweet corn is 1 284 and the net income is 5 903.88 yuan per 667m2,which is 770.86 yuan more than that of cropping Shangshu 19 purely.This study provide reference for the efficient use of sweet potato field in Shangluo city.
国家科技期刊平台
NSTL
万方数据
