Effects of Different Cultivation Factors on Major Agronomic Characters and Economic Benefit of Shishan Rapeseed
To explore the optimal sowing date,planting density and fertilizer dosage of Shishan rapeseed,to realize the combination of good breeding and high yield cultivation techniques in the suitable area of Yuxi City. Using three-factor and three-level orthogonal test,we re-searched the optimal sowing date,planting density and fertilizer dosage of Shishan rapeseed in Yuxi City,as well as the effects of shoot,seed yield and economic benefit. The effects of three factors on shoot yield from big to small were in the order of sowing date,planting density,urea dosage;the effects of three factors on seed yield from big to small were in the order of planting density,sowing date,urea dosage,the shoot and seed yield difference of each treatment reached a significant level,sowing date had significant effects on the first picking time,harvesting days,times and growth period of Shishan rapeseed. Planting density was negatively correlated with shoot thickness,fresh weight per shoot,pod number and pods per plant. However,the effect of urea dosage amount on growth period and agronomic traits was not obvious. The opti-mal combination of cultivation factors for Shishan rapeseed were September 30 for planting date,60000 plants/hm2 for density,375 kg/hm2 for urea at seedling stage,the yield of fresh shoot could reach 31183.8 kg/hm2,seed yield could reach 1888.75 kg/hm2,the net income was 165200 yuan/hm2,output-input ratio was 3.55,and the economic benefits were relatively high.
万方数据
维普
