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早稻一生实际需水量并不比旱地作物多,只要科学合理地运筹水浆,不但可节约用水,还可以以水为杠杆,调节土壤水、肥、气、热,创造适宜水稻各生育阶段的生长发育条件,夺取高产。水稻各阶段的灌溉枝术要求是: 1、湿润育秧,促进根粗苗壮早稻从播种到一叶一心期,秧田要保持干干湿湿,以湿润为主,做到湿不积水(除暴雨或低温)。两叶期秧田要保持适当水层,以水保温,以水调肥.以肥促苗。如长期阴雨或低温,要及时排水歇脚,以气养根,达到根旺苗壮。从三叶期到移栽前,秧田要浅水勤灌,结合追肥实行自由落干,使秧板通气,促进根苗生长。 2、浅水插秧,深水护苗促返青
The actual water demand of early rice is no more than that of dry land. As long as scientific and rational operation of water slurry can not only save water, but also use water as lever to regulate soil water, fertilizer, gas and heat and create suitable growth and development of rice at each growth stage Conditions, to win high yield. Irrigation techniques at all stages of rice requirements are: 1, wet nursery seedlings to promote root and seedling strong early rice from sowing to a leaf one heart, seedling to maintain dry wet, wet mainly wet so wet (except Heavy rain or low temperature). Two leaf stage seedling field to maintain the appropriate water, water insulation, water and fertilizer. Such as long-term overcast or cold, it is necessary to timely drainage of rest, to raise gas root, to root Wang Miao Zhuang. From the three-leaf period before transplanting, seedling shallow groundwater irrigation, combined with the top-dressing free fall, so that seedlings aerated to promote root and seedling growth. 2, shallow water transplanting, deep water to promote green seedlings