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为了培育出适应当地栽培稳产高产的玉米杂交种,我们曾结合农业课教学,采用轮配法试配了许多玉米杂交组合,但几年来都没有达到予期的目的,反而背的包袱越来越大。毛主席说:“人们经过失败之后,也就从失败取得教训,改正自己的思想使之适合于外界的规律性,人们就能变失败为胜利,……”根据这一教导,我们查找了失败的原因,通过几年来玉米育种实践的回顾,和总结我省及邻近几省目前推广种植的玉米杂交种,如辽宁省推广的丹玉六号,辽单二号;河北省及北京市推广
In order to breed corn hybrids suitable for stable and high-yielding cultivation in the local area, we have tried many kinds of corn hybrid combinations with the rounding method in the teaching of agricultural courses. However, in the past few years, the hybrid corn hybrids have not reached their intended purpose. However, . Chairman Mao said: “After people fail, they also learn lessons from failure and correct their own thinking so that they can be adapted to the laws of the outside world. People can become defeated and victorious.” According to this teaching, we searched for failure The reasons are summarized as follows: a review of maize breeding practice over the past few years, and a summary of maize hybrids currently popularized in our province and neighboring provinces, such as Danyu No.6 and Liao Dan No.2 promoted in Liaoning Province; promotion in Hebei Province and Beijing Municipality