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根据历年研究资料,针对水、肥、光热的利用,就如何实行某些战略性技术改革提出三点建议。一、为了节约用水,要实行限额灌溉与分散灌溉。我国北方及西北经常春旱,受旱严重的是麦类和春播作物。据小麦灌溉试验结果,在不浇底墒水的情况下,每亩浇50立方水,以在拔节期灌溉增产最多,比不浇水的增产68.7%,而冬前灌溉或在返青期、抽穗期、开花期灌溉只增产9.5—1 3.4%。目前农田用水日益紧缺,但有些社队往往不论产量
According to the research materials over the years, for the utilization of water, fertilizer and light and heat, we put forward three suggestions on how to implement some strategic technical reforms. First, in order to save water, to implement the limited irrigation and decentralized irrigation. Spring and drought are frequent in the north and northwest of our country. Wheat and spring crops are severely affected by the drought. According to the results of wheat irrigation experiments, without irrigating water, 50 cubic meters of water were poured per acre to increase the yield of irrigation at the jointing stage by 68.7% compared with that of the non-irrigated, , Flowering irrigation only increased 9.5-1 3.4%. At present, there is a growing shortage of farmland water, but some communes and brigades often do not care about output