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随着小麦产量水平的提高,每穗粒数在产量三因素中的地位显得日益重要。特别是在高产条件下,产量的高低在很大程度上决定于单穗生产力。因此,在稳定穗数的前提下争取大穗大粒,是进一步提高小麦单产的主攻目标。为了探索穗大粒重的高产栽培途径,我们从1979年起,对不同条件下的小麦幼穗发育及粒数形成进行了研究,现将研究结果报告如下:
With the improvement of wheat yield, the status of grain per spike in the three factors of production is increasingly important. Especially in high yield conditions, the level of yield depends largely on the single ear productivity. Therefore, under the premise of stabilizing the number of spike large grains, is to further improve the main goal of wheat yield. In order to explore high-yielding cultivation methods for panicle size and grain weight, we studied wheat panicle development and grain number formation under different conditions from 1979 onwards. The results are reported as follows: