Screening of Cultivation Techniques and Model Construction of Good Quality and Proper Yield on Tobacco Variety PVH1452
LI Wei1, WANG Chao1, ZHANG Jing1, YANG Yingming1, ZHOU Shaosong2
1. Raw Materials Department of Hongyun-Honghe Tobacco(Group) Co., Ltd., Kunming 650231, China;
2. Institute of Agricultural Environment and Resources, Yunnan Academy of Agricultural Sciences, Kunming 650205, China
[Purpose] The aim was to screen for the cultivation techniques of good quality and proper yield on PVH1452.[Method] The effect of nitrogen rate, plant spacing, remained leaves, topping stage and their interactions on yield and output value were analyzed through L27(313) orthogonal test.[Results] Nitrogen rate, (plant spacing×remained leaves) and (nitrogen rate×plant spacing) had significant effect on yield of PVH1452 varieties, (spacing×remained leaves) and nitrogen rate had significant effect on output value, topping stage on the yield and output value were not significant impact, then yield and value contained 56.8% and 45.7% of the dependent variable changes;the highest combined yield of PVH1452 was nitrogen 6.5kg, spacing 0.55m, remained 18 leaves; the highest output value combination was nitrogen 6.5kg, remained 18 leaves; screened optimum yield model Y=179.804+16.406X1+15.9X2X3-13.961X1X3, the optimal output value model for the Y=3 569.956+452.367X2X3+441.883X1.[Conclusion] The residuals of the two models were in accordance with the normal distribution, which can provide the theoretical basis for the selection of PVH1452 cultivation techniques.
LI Wei, WANG Chao, ZHANG Jing, YANG Yingming, ZHOU Shaosong.Screening of Cultivation Techniques and Model Construction of Good Quality and Proper Yield on Tobacco Variety PVH1452[J] Journal of Yunnan Agricultural University, 2017,V32(4): 643-651