水溶性叶面肥对豇豆产量的影响

Effect of Water Soluble Foliar Fertilizer on Cowpea Yield

使用8个不同配方叶面肥在豇豆营养生长阶段喷施3次,调查叶面肥对豇豆产量的影响。结果表明,与对照相比,喷施4.3%黄腐酸叶面肥处理增产67.0%;8%黄腐酸+氮磷钾增产57.1%;大量元素+微量元素[(N+P2O5+K2O≥23%9∶6∶8)+(Fe+B+Zn≥1%)]的增产48.2%;4%腐植酸钾+大量元素+微量元素[(N+P2O5+K2O≥23%9∶6∶8)+(Fe+B+Zn≥1%)]增产43.2%(添加腐植酸钾不利于提高产量);3%腐植酸钾+维生素+尿素+硫酸钾≥7%增产40.8%;大量元素+微量元素[(N+P2O5+K2O≥35%12∶10∶13)+(Fe+B+Zn≥0.6%)]增产39.5%;3%腐植酸钾+大量元素+微量元素[(N+P2O5+K2O≥35%12∶10∶13)+(Fe+B+Zn≥0.6%)]增产33.7%;4%腐植酸钾增产15.9%。黄腐酸增产效果最明显,微量元素增产效果比大量元素明显,腐植酸钾增产幅度较低,腐植酸钾+大量元素+微量元素处理的增产效果低于大量元素+微量元素处理。

To investigate the effects of foliar fertilizer on the yield of cowpea, eight different foliar fertilizers were sprayed in cowpea vegetative growth stage for 3 times. Results showed that the yield increased 67%by spraying 4.3%fulvic acid foliar fertilizer, increased 57% by spraying 8% fulvic acid＋（N＋P2O5＋K2O）, increased 48.2% by spraying major elements and trace elements[（N＋P2O5＋K2O≥23% 9∶6∶8）＋（Fe＋B＋Z≥1%）], increased 43.2% by spraying 4%potassium humate＋major elements＋trace elements[（N＋P2O5＋K2O≥23% 9∶6∶8）＋（Fe＋B＋Zn≥1%）], increased 40.8%by spraying 3% potassium humate＋vitamin＋carbamide urea＋potassium sulfate≥7%; increased 39.5% by spraying major elements＋tace elements[（N＋P2O5＋K2O≥35% 12∶10∶13）＋（Fe＋B＋Zn≥0.6%）]; increased 33.7% by spraying 3%potassium humate＋major elements and trace elements [（N＋P2O5＋K2O≥35% 12∶10∶13）＋（Fe＋B＋Zn≥0.6%）];increased 15.9%by spraying 4%potassium humate. The most obvious of yield increase was fulvic acid, the effect of trace elements was better than that of major elements, potassium humate was the lowest, potassium humate＋major elements＋trace elements was less than major elements＋trace elements.