为解决优种紧缺、价格昂贵、投资大的实际问题,根据现行播量和种子的斤粒数,我们制订了精量播种兼防地下害虫试验方案。1987年在忻州、定襄、五台、原平、代县、繁峙、岢岚、偏关8个县(市)布点16个,对高粱、玉米、谷子进行了试验,均收到预期的效益。一、试验依据高粱:现行亩播量为2公斤,亩留苗1 In order to solve the practical problems of scarcity, high price and big investment, we developed a trial plan of precision sowing and prevention of underground pests according to the current sowing amount and the weight of seeds. In 1987, sixteen counties (cities) in Xinzhou, Dingxiang, Wutai, Yuanping, Daixian, Fanzhi, Langlan and Piaozhuan were stationed and 16 sites were tested for sorghum, corn and millet, all of which received the expected benefits . First, the test basis Sorghum: the current acres of sowing 2 kg, mu Liao Miao 1