精量稀播是小麦高产的有效措施马起超任文曾杨文岐崔国林（西峡县农业局，西峡４７４５００）西峡县常年种植小麦２２．３万亩，单产徘徊在２００ｋｇ上下。多年的生产实践表明，大播量是其制约因素之一。由于播量大，冬前群体每亩达８０万左右，春季高达１００多万，常导... Sparse sowing is an effective measure for high-yielding wheat Ma Zichao Ren Wenzeng Yang Wenqi Cui Guolin (Xixia County Bureau of Agriculture, Xixia 474500) Xixia County, planting 223,000 mu of perennial wheat, hovering around 200kg. Years of production practice shows that seeding volume is one of the constraints. Due to the large amount of sowing, pre-winter groups of 800,000 per acre up to about 1 million in spring, often guided ...