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1987年,北京郊区粮食作物播种面积742万亩,其中冬小麦271.7万亩,水稻57.7万亩,玉米334.7万亩,大豆20万亩.这四大作物占粮食作物播种面积的92%.在品种布局工作中,我们的主导思想是:品种布局要以区域试验,生产示范为依据,根据品种的特征特性,用其所长,避其所短.在实践中应掌握从大面积生产出发,抓住生产上的主要矛盾,因地制宜,合理选用,相对稳定,均衡增产的原则.使布局品种能充分利用本地有利条件,并能有效地克服和限制生产中的不利因素,使其最大限度地达到高产稳产持续
In 1987, the sown area of food crops in the suburbs of Beijing totaled 7,420,000 mu, including 2,717,000 mu of winter wheat, 577,000 mu of paddy, 3 million 478,000 mu of corn and 20 million mu of soybeans. These four crops account for 92% of the sown area of food crops. In our work, our guiding ideology is that the layout of varieties should be based on regional experiments and production demonstrations, and based on the characteristics and characteristics of the varieties, we should use their strengths and avoid short ones. In practice, we should grasp from large-scale production to seize The main contradictions in production, according to local conditions, the rational use of a relatively stable, balanced production increases the principle of the layout varieties can make full use of local favorable conditions, and can effectively overcome and limit the production of unfavorable factors to maximize its high yield continued