摘要
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。
The lodging causes of wheat in West Sichuan Plain were preliminarily studied.The main results were as follows:the lodging resistance of wheat cultivar was dominantly affected by the length between 1st and 2nd node over ground(X2) and the root weight per stem(X1);the optimum regression equation of the lodging index(LI) was y=1.9497+ 2.1666X2-0.1341X1;LI was not significantly correlated with the plant height and the length from 2nd to 3rd node.In view of the facts of lodging in West Sichuan Plain,we considered that the major cause leading to wheat lodging lay in the root but not in the plant height in this area.The significance of this study in wheat cultivating and breeding was also discussed in this paper.
出处
《西南农业学报》
CSCD
1995年第3期12-15,共4页
Southwest China Journal of Agricultural Sciences
关键词
小麦
倒伏
根系
株高
川西平原
Wheat lodging Root system Plant height West Sichuan Plain
