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水稻需水包括两个方面,一是生理需水,二是生态需水。在保证生理需水的前提下,尽量控制和改变生态需水,这是水田节水增产的关键。在这方面,我们采取了四项措施: 1.集中育苗,统一放水。以前育苗放水分散,从3月27～28日到4月10日,天天放水,延续11～12天。育苗地用水量虽然不多,但是苗地分散,渠道输水损失很大,每亩用水多达50～80方。新措施规定,育苗前生产单位与灌区商定放水日期,灌区将各育苗单位用水统盘考虑,制定放水日程表,发到各生产队和放水员手中,使其做好放水准备。实行集中育苗,统一放水,育苗期放水3～4天即可,每亩用水量降到20～25方。
Water demand in rice includes two aspects, one is physiological water demand, and the other is ecological water demand. Under the premise of ensuring physiological water demand, try our best to control and change ecological water demand, which is the key to water saving and yield increase in paddy fields. In this regard, we have taken four measures: 1. Concentrate nursery and unify water diversion. Before nursery water diversion, from March 27 to April 10, every day to drain, extended 11 to 12 days. Although not much seedling water, but the seedling scattered, water loss of large channels, up to 50 to 80 square meters of water per mu. The new measure stipulates that the pre-nursery production unit and the irrigation district agree on the water release date. The irrigation district will consider the water supply of each nursery unit in a coherent manner and formulate a release schedule to be sent to production teams and divers to prepare it for discharge. The implementation of centralized nursery, unified water, seedling water 3 to 4 days, water consumption per acre down to 20 to 25 square.