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1987～1989年我县承担了省科委下达的“万亩夏玉米综合配套高产开发试验”课题,实现了小麦、玉米一年两作亩产1001.31公斤的目标。小麦亩增131.4公斤,玉米亩增215.2公斤,分别增产40.6％和65.0％。在总结“二改二增三及时”技术的基础上,自1990年开始,逐步向大田推广,1994年就达15万亩,为当年玉米播种面积的59.8％,单产610.8公斤,年均递增14.7％;累计推广46万亩次,累增粮食12998万公斤,为五年玉米总收获量的
From 1987 to 1989, our county undertook the task of “high-yielding experiment of mu of summer maize comprehensively developed” promulgated by the Provincial Science and Technology Commission and realized the goal of 1001.31 kilograms per mu of wheat and corn per year. Mu increased by 131.4 kilograms of wheat, acres of 215.2 kilograms of corn, respectively, an increase of 40.6% and 65.0%. On the basis of summarizing the technology of “two changes, two increases and three timelys”, since 1990, it was gradually promoted to the Daejeon area, reaching 15 million mu in 1994, accounting for 59.8% of the sown area of maize for the year with a yield of 610.8 kg and an average annual increase of 14.7 %; A total of 460000 acres of times, the cumulative increase of 129980000 kilograms of grain, five years of total corn harvest