GS豫麦21号的丰产,稳产性及产量结构分析

利用黄淮南片水地小麦良种区试和河南省区试、生产示范资料，对GS豫麦21号的丰产性、稳产性和产量结构进行分析。结呆在明：GS豫麦21号具有丰产稳产性好、适应性广、产量构成三要素协调等优良特性，在产量构成三要素中，千粒重对产量的直接作用最大，穗粒数次之，有效穗数的直接作用最小，因此在高产栽培上应在兼顾667m2成穗（40万上下）的基础上，主攻千粒重和穗粒数的增加。

Analysis of Steadily High Yield and Yield Mix of Gs Yumai 21

By means of experimental and Productive tests, the stable high yield and yield mix of GS Yumai 21 are investigated, the results are as follows: Its striking features are of stable yield, wide adaptability and proper ratio between the three elements of yield mix. Of the three elements, kilo-grain weight play the highest effect on yield mix, the number of grain per ear comes next, and the number of valid ear the smallest, they three are of a concert unity depending on each other and holding each other back. Futhermore, the high yield route is approached, that is, on the basis of the number of valid ear meeting to be more than 667 per m2, to raise the number of grain per ear and kilo-grain weight as enoughly as possible.