论文部分内容阅读
本文对川西平原小麦倒伏的原因作了初步研究,主要结论是:小麦品种的抗倒力主要受基部第一节间长度(X2)和单茎根重(X4)的影响,其倒伏指数的最优回归方程为y=1.9487+2.1666X2-0.1341X4。而株高、基二节间长度与倒伏指数均无显著相关。结合川西平原小麦倒伏的实际,本文认为,该区小麦倒伏的主要原因在极而不在茎秆高度。本文还探讨了本研究结果在栽培和育种上的意义。
In this paper, the causes of wheat lodging in the western Sichuan Plain were preliminarily studied. The main conclusions are as follows: The lodging resistance of wheat cultivars is mainly affected by the length of the first internode (X2) and the single root weight (X4) The optimal regression equation is y = 1.9487 + 2.1666X2-0.1341X4. However, there was no significant correlation between plant height, length between two plants and lodging index. Combined with the actual situation of wheat lodging in the western Sichuan Plain, this paper argues that the main reason for the wheat lodging in this area is extremely not at the height of the stalk. This article also explored the significance of the results of this study in cultivation and breeding.