盛花期的连续暴雨影响了大田油菜的受粉防止减产的补�措施是 a喷施硼肥 b追施氮肥 C喷施一定浓度的生长素类似物溶液 D以上措施 Template




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tomski盛花期的连续暴雨影响了大田油菜的受粉防止减产的补�措施是 a喷施硼肥 b追施氮肥 coloring