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研究结果表明，不同种植密度下的不同小麦品种花期叶面喷施MS增抗剂、丰收素及481，有显著的促粒增重和增产效应。每穗增加0．5～3．3粒；每粒平均日增重0.1346～0．5110mg；穗重增加41．81～109．78mg；每穗干物质日积累量灌浆前期较对照平均增加2269mg/d·穗，中期增加16.11mg/d·穗，后期降低10．07mg／·d穗；净增产375～1500kg／hm2。其中，MS增抗剂促粒增重效应最为显著，每穗净干物质积累量比对照高177.87mg，灌浆速度最大值的出现比对照提前1．1～2．4d。
The results showed that different wheat varieties at different planting density at the florescence foliar spraying MS antagonist, bovine hormone and 481, significant grain weight gain and yield effects. The average daily gain of each grain was 0.1346 ~ 0.5110mg; The ear weight was increased by 41.81 ~ 109.78mg; The daily accumulation of dry matter per panicle increased by 2269mg / d · spike, increasing 16.11mg / d · spike in the middle stage and 10.07mg / · d spike in the late stage; and a net yield of 375 ~ 1500kg / hm2. Among them, MS antagonist had the most significant effect of promoting grain weight and weight gain, and the net dry matter accumulation per ear was 177.87 mg higher than that of the control. The maximum filling velocity occurred 1.1 ~ 2.4 days earlier than the control.