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连作杂交晚稻生育后期,由于受低温寒潮影响,结实率下降,影响产量。去年秋,我所选用美国太平洋化学公司生产的纯营养剂绿芬威1号和绿芬威4号,在连作杂交晚稻的始穗期至灌浆期进行喷施试验,取得良好效果。1材料和方法 在本所中等肥力的泥质田进行,组合以当地主栽的“协优46”为材料,分别在始穗期、齐穗期和灌浆期进行喷施,喷施浓度是750g/hm~2,兑水750kg/hm~2均匀喷雾。随机排列,重复3次,小区面积33.33m~2,
Continuous cropping late hybrid rice late growth period, due to the impact of cold and cold wave, seed setting rate decreased, affecting the yield. Last autumn, I chose the pure nutrients Greenpeace 1 and Greenpeace 4 produced by the American Pacific Chemical Company to spray test in the early heading stage to the filling stage of continuous cropping late hybrid rice, and achieved good results. 1 Materials and methods were carried out on moderately fertile muddy fields of this institute. The combinations were primarily sprayed on “Xieyou 46” locally cultivated at the beginning, full heading and filling stages. The spraying concentration was 750g / hm ~ 2, watered 750kg / hm ~ 2 uniform spray. Randomly arranged, repeated 3 times, the plot area of 33.33m ~ 2,