论文部分内容阅读
选用生产上推广、示范的３个棉花品种，研究了黄萎病不同发病程度对产量及其构成因素的影响，（１）皮棉产量＞子棉产量＞单株结铃数＞铃重＞果枝数＞株高＞衣分；（２）不同发病程度使单株皮棉减产１５．６％～８３．２％，单株子棉减产１９．５％～８３．１％，单株结铃数减少９．２％～６６．７％，铃重减轻８．９％～４７．７％，衣分下降０．５％～４．９％，纤维长度下降０．７％～５．３％；（３）品种的熟性不同对黄萎病影响的反应不同；（４）建立了不同品种发病程度与结铃数、铃重、单株子棉、单株皮棉产量的直线回归方程。
Three cotton varieties, which were promoted and demonstrated in production, were selected to study the effects of different degrees of pathogenesis on the yield and its components of Verticillium wilt. (1) Lint yield> cotton yield> number of bolls per plant> boll weight> fruit number (2) Different degrees of disease reduced the lint yield by 15.6% -83.2%, reduced cotton yield by 19.5% -83.1% and decreased the number of bolls per plant by 9 .2% ~ 66.7%, boll weight reduced by 8.9% ~ 47.7%, cotton decreased by 0.5% ~ 4.9%, fiber length decreased by 0.7% ~ 5.3% (4) A linear regression equation was established for the degree of disease, number of bolls, boll weight, seed cotton per plant and lint yield per plant.