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在高产条件下,冬性春性类型小麦品种各自适期播种,相对早播的冬性半冬性类型的总干物质积累量(简称 DMA,后同)高于春性类型;生育前期冬性、半冬性的 DMA 高于春性,后期春性半冬性高于冬性。茎秆光合产物输出率、成熟期籽粒干重占单株总干重的百分率表现为春性>半冬性>冬性,而基秆干重所占的百分率则呈相反趋势。同期播种,总 DMA 及籽粒产量都有春性高于冬性、半冬性的趋势。春性及半冬性品种的籽粒干重日增长量和籽粒相对生长率都明显高于冬性品种。因而春性及半冬性品种单株粒重大,经济产量高。本文提出在冬性春性类型品种交叉地区,小麦生产上选用偏春性的中矮秆品种,其增产作用更大。
Under high-yielding conditions, the winter spring type wheat varieties were sowed properly, and the total dry matter accumulation (winter and winter) of the winter and semi-winter types of relative early sowing were higher than that of spring type; Semi-winter DMA is higher than spring, later spring semi-winter than winter. Stem photosynthate output rate, dry matter grain weight at maturity as a percentage of total dry weight per plant showed spring> winter> winter, and the percentage of basal stem dry weight was the opposite trend. Sowing the same period, the total DMA and grain yield spring than winter, semi-winter trend. The spring dry and semi-winter varieties of grain dry weight daily growth and grain relative growth rate were significantly higher than winter varieties. Thus spring and semi-winter varieties single grain weight, high economic output. In this paper, we propose that the mid-dwarf varieties with more springy characteristics should be selected in the crossover areas of winter-spring type and the yield-increasing effect is greater.