小麦高产栽培中两条丰产途径的研究

在人工控制分蘗的条件下,研究了基本苗数、单株分蘗数、控蘖时期以及群体(穗数)的大小、级成与穗子大小的关系。通过对两种栽培途径的比较,認为在相同群体(穗数)条件下,采用降低基本苗数,充分利用分蘖成穗的途径,比增加基本苗数的途径,有利于穗大粒多高产。研究证明,在生产上利用分蘖成穗的数目,以10个左右为宜。

STUDIES ON TWO HIGH YIELDING WAYS UNDER HIGH-YIELD CULTIVATION OF WINTER WHEAT

The experiment was carried out by manipulation of tiller number inwinter wheat (Triticum aestivum L.) in order to study the relationsamong seedling density, tiller number per plant, tiller-controlling stages,plant population (car number), population composition and ear size.Between two cultivation ways, we considered that under conditions of thesame population (car number), the way of reducing seeding density andmaking fully use of tillers into ears, which favourable to gain bigger earsmore grains and higher yields, was better than that of increasing seedingdensity. It was shown that approximately 10 tillers per plant would beused better in production.