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1.南方麦套春大豆自幼苗到花芽分化期,因当时麦行郁闭,各器官组织的同化作用能力较其他生态条件下为弱,物质代谢的氧化还原和合成作用进行得也较缓慢,营养体弱小。盛花期由于麦子已刈割,行间光照充足,光合作用渐次增强,干物质迅速增高,物质代谢的氧化还原和合成作用迅速加快,植株内各种物质的流动速度比前期增加,代谢的活动方向转移到水解方面去,植株中可塑性物质自叶流向贮藏器官和繁殖器官。 2.结荚期是麦套春豆生育的最旺盛时期,糖、氮日平均增长量、叶面积指数、各部位总可溶性糖％以及叶的多糖都为一生中最高,也是同化作用最强,物质代谢的氧化还原和合成作用进行得最快的阶段。 3.结荚鼓粒期,南方麦套春豆所需氮素较多,初花期追施速效性氮肥和结荚鼓粒期的根外追肥,有利植株生育,因而能获得增产效果。 4.根据麦套春大豆生育期短,植株瘦弱、分枝少的特点,因地制宜,采用亚有限结荚习性品种,适当增加密度,保证每亩4万株可以获得较高的产量。
1. Southern wheat sets of spring soybean seedlings to the flower bud differentiation period, due to wheat line canopy closed, the ability of assimilation of various organs and tissues than other ecological conditions are weaker, the metabolism of the redox and the synthesis of the role carried out more slowly, Nutrition is weak. In full flowering period, wheat has been mowed, sufficient light between rows, photosynthesis gradually increased, the rapid increase of dry matter, rapid redox metabolism of matter metabolism and the rapid increase in the flow of various substances within the plant than the previous increase in the direction of the activity of metabolism Transfer to hydrolysis, the plastic material in the plant flow from leaves to storage organs and reproductive organs. 2. The podding stage is the most vigorous period of wheat growth, the average daily growth of sugar and nitrogen, the leaf area index, the total soluble sugar content of all parts and leaf polysaccharide are the highest in life, and also the strongest assimilation, The most rapid phase of the redox and biosynthesis of material metabolism takes place. In the stage of podding and drumming, there were more nitrogen required for the south wheat and spring peas, the top-dressing nitrogen fertilizer and topdressing of the podding drum stage at the first flowering stage were beneficial to plant growth, which could increase yield. According to the characteristics of short duration of wheat growth, thin plant, fewer branches, we use sub-limited varieties of pod habitat, increasing the density appropriately to ensure 40,000 plants per acre to obtain higher yield.