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为解决农村“三夏”期间劳动力少的问题,笔者开展了不同控释肥对夏玉米生长及产量影响的试验,为搜寻夏玉米简化栽培措施提供理论依据。1材料和方法2010年在河南省方城县农业局的试验田内进行试验,设5种处理:A、普通尿素(PU,含纯氮量46%);B、树脂包膜尿素,1次底施(PCU,含纯氮量42%);C、硫磺加树脂包膜尿素,1次底肥
In order to solve the problem of less labor force in rural areas during the “Three Summers” period, the author conducted experiments on the effects of different controlled release fertilizers on the growth and yield of summer maize, and provided theoretical basis for the search of simplified maize cultivation measures. 1 Materials and methods In 2010, Fangcheng County Bureau of Agriculture in Henan Province to test the trial field, set up five kinds of treatment: A, ordinary urea (PU, containing 46% of pure nitrogen); B, resin coated urea, Shi (PCU, containing 42% of pure nitrogen); C, sulfur plus resin coated urea, a base fertilizer