摘要
不同播期的麦田均可实现亩产500kg高产,但要求不同的农艺组合措施与之配合,从而形成小麦高产的多途径。由于播期的不同,造成不同麦田前期苗情差异甚大,通过运用各自相应的配套措施,在群体建成阶段进行调控,把途径间的光合生产进程各项指标调整到同一水平,即具有无效分蘖衰减迅速,无效消耗少;开花期叶面积适宜分布合理,后期净光生产率高;干物质积累前轻后重等共同特点,可殊途同归,共创高产。
The research has pointed out that being provided with the different combinastions of agricultural measures, there the ways which the grain yield of wheat may reach to 500kg per mu(7500kg/ha) with the different sowing time, and in the wheat fields of high-yield, there are some common characteristics as follows-the leaf area is suitable in the floresdcence and the sunlight is scattered retionally;the ineffective tillerings decrease repidly and hences consume less nutrient. The net rate of carbon assimilation is high in the later stage; and the accumulation of the pure organic substance is less in the earlier stage but more in the later.
The author considers that under the circumstances of the greatly different sowing dates, it is by'means of utilizing the various sets of the cultivation technical system in the stage of colonial communal development we can adjust photosynthetic production of each plant population to about same optimum level, and attain the high-yield grain of wheat in the varied ways.
出处
《莱阳农学院学报》
1992年第3期196-200,共5页
Journal of Laiyang Agricultural College
关键词
小麦
高产
栽培
wheat
high-yield cultivation
precision-drilling cultivation
singlestem
