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以新陆中50号为供试材料,设4个密度梯度,分析密度对棉铃时空分布、农艺性状和经济性状的影响,对籽棉单产和密度进行回归分析。结果表明,10 361株·(666.7 m~(-2))处理的“三桃”总数、伏桃数、内围铃数、上部铃、果枝数、有效果枝数和铃重显著高于对照(14 965株·(666.7 m~(-2)));10 361株·666.7 m~(-2)和12 627株·(666.7 m~(-2))处理的单株成铃数显著高于对照;12 627株·(666.7 m~(-2))处理的籽棉、皮棉产量显著高于对照。密度与籽棉单产的二次曲线回归方程为y=-0.000 005 78x~2+0.118x-164.72。
Taking Xinluzhong 50 as test material, four density gradients were set up to analyze the effects of density on the spatio-temporal distribution, agronomic characters and economic characters of cotton bolls. Regression analysis was conducted on the yield and density of seed cotton. The results showed that the number of bolls, the number of bolls, the number of bolls, the number of bolls, the number of branches, the number of effective branches and the bolls weight of 10 361 plants (666.7 m -2) were significantly higher The number of bolls per plant of the control (14 965 plants (666.7 m -2)), 10 361 plants (666.7 m -2) and 12 627 plants (666.7 m -2) The yield of seed cotton and lint treated with 12 627 plants (666.7 m ~ (-2)) was significantly higher than that of the control. The regression equation of quadratic curve between density and seed cotton yield was y = -0.000 005 78x ~ 2 + 0.118x-164.72.