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张家口宣化一带,栽培高粱多用三腿耧播种,行距小(八寸),株距反而大(一尺以上),交错留苗,中耕不便,通风透光也不好,影响产量的提高。1964年我们在该县西望山建立研究基点,曾向生产队提出改变行株距的意见。即放宽行距缩小株距,以便加强中耕管理,提高产量。为了做出样板,示范群众,在第六生产队进行了对比试验。试验仍利用当地三腿耧,堵住中腿然后
Zhangjiakou Xuanhua area, the cultivation of sorghum and more with three-legged seeding, row spacing (eight inches), but rather large spacing (more than one foot), staggered seedling, inconvenience in farming, ventilation and light is not good, affecting the yield increase. In 1964 we set up a research base in Mount Xishan in this county, and we had put forward to the production team the opinion of changing the row spacing. That is to reduce the spacing between the spacing narrowed in order to strengthen the cultivation management, increase production. In order to make a model to demonstrate the masses, the sixth production team conducted a comparative test. Test is still using the local three legs 耧, blocking the legs and then