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1制种玉米施肥的现状和农户的施肥习惯玉米制种是甘肃省河西走廊第一大农业支柱产业,从20世纪80年代末逐步发展到目前的全国第一玉米制种基地,是全国玉米杂交种主要产区之一。玉米制种已成为当地农民的主要经济来源,也是各家种业公司的主产业。但是经过多年连作栽培,制种玉米产量有逐年下降的趋势,病虫害有逐年加重的风险。为改善这一趋势,
1 Seed Production Status of Fertilization and Farmers’ Fertilization Practices Corn seed production is the largest agricultural pillar industry in Hexi Corridor of Gansu Province. From the late 1980s to the present, the country’s first corn seed production base is the national corn hybrid One of the main producing areas. Corn seed production has become the main source of income for local farmers, but also the main industry of various kinds of seed companies. However, after years of continuous cultivation, the yield of maize has a downward trend year by year. Pests and diseases have the risk of increasing year by year. To improve this trend,