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在毛主席关于“农业学大寨”的伟大号召下,我们以阶级斗争为纲,深入开展科学技术革命,改革耕作制度,实行三种三收,使粮食产量不断提高。我们三种三收的三茬庄稼是小麦、玉米、高粱。玉米在5月中旬播种,套种在麦田里,这时小麦已开始抽穂,离成熟期还有一个月,所以玉米与小麦“共生”的时间为一个月。在“共生”这段时间内,由于天气少雨干旱,气温较高(据近二年的气象资料统计,6月份的雨量很少,平均降雨量为72.7毫米),而这时期玉米需要120多毫米的水,故不能满足玉米正常生长的需要。因此解决玉米苗期干旱,就成了套种玉米栽培的重要问题。从1974年开始,我们进行了小麦生长后期三个不同停水期(即5月31日、6月5日、6月10日)对玉米
Under Chairman Mao’s great call on “learning from agriculture, we take the class struggle as the key link, deepen the revolution in science and technology, reform the farming system, and implement the three kinds of methods to increase grain output. The three crops we harvest are wheat, corn and sorghum. Corn was planted in mid-May and interplanted in the wheat fields, when wheat was pumped and there was another month from maturity, so maize and wheat were ”symbiotic“ for a month. During the period of ”symbiosis", temperatures are higher due to the less rainfall and drought (according to the meteorological data of recent two years, the rainfall in June is very little and the average rainfall is 72.7 mm), and the period of corn needs more than 120 mm Of water, it can not meet the needs of normal growth of corn. Therefore, to solve the maize seedling drought, it became an important issue intercropping corn cultivation. Starting in 1974, we conducted three different periods of post-growth wheat off-season (ie May 31, June 5, June 10) for corn