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改善田间条件是水稻增产的重要因素.高产水稻田应具下列特点:土层厚而肥,土壤结构良好,排灌系统良好,地下水位低和富于有机物质.全年的品种安排趋向于向一年的中间靠拢.这样安排可避过早春和晚秋的寒冷天气和利用夏天高温强光的好环境.培育壮秧是早、晚稻的高产的前提.预防由低温引起的烂秧是早稻育秧过程的首要问题.基于对水肥需要不同,水稻在本田的田间管理可分为三个时期:前期的田间管理是促进分蘖生长,以获得足够的有效分蘖;中期要控制水稻群体的发展,抑制无效分蘖,养分集中供穗分化用;后期则要维持根和叶的活动,使结实粒多、粒重.深施肥料无论在植株生长或产量方面都比表施为佳.与表施相比,深施有许多优点,如减少氮素损失,供肥稳而长久,增加根的生长和活性等等.与常规品种相比.杂交稻具很强的分蘖特性、故宜疏播、疏植、多施肥料.
The improvement of field conditions is an important factor for increasing rice yield. High-yield paddy fields should have the following characteristics: thick and fat soil layers, good soil structure, good irrigation and drainage system, low groundwater level and organic matter richness. So close to the middle of the year.This arrangement can avoid the cold weather in early spring and late autumn and the good use of summer high temperature and strong light.It is a prerequisite for high yield of early and late rice cultivation.Silk seedling prevention caused by low temperature is the process of early rice seedling The main problem. Based on the different needs of water and fertilizer, field management of rice in Honda can be divided into three periods: the early field management is to promote tillering growth in order to obtain sufficient effective tillering; medium-term to control the development of rice population, inhibition of ineffective tillers, Nutrients concentrated for the purposes of differentiation; the latter will have to maintain the activity of roots and leaves, so that more solid grain, grain weight .Delts of fertilizer application in both plant growth or yield than the surface is better. There are many advantages, such as reducing nitrogen loss, providing stable and long-term fertilizers, increasing root growth and activity, etc. Compared with conventional varieties, hybrid rice has strong tillering characteristics, so it is desirable to disperse, sparse, and more Fertilizer.