肥料减量对大理州大蒜生长、产量及效益的影响

为减少化肥施用量、控制农业面源污染提供参考依据,特开展大理州大蒜肥料减量施用对大蒜产量、独蒜率及效益影响的研究,以筛选大蒜最佳减量施肥方式。试验结果表明,综合考虑种植成本和生产效益,大理州洱海流域外大蒜种植最适宜的肥料减量施用方式是每667 m^2施商品有机肥1000 kg、三元控释肥(22-8-12)67 kg作底肥,3叶期追施尿素10 kg/667 m^2作退母肥,6叶期追施三元复合肥(17-17-17)33.5 kg/667 m^2作分化肥。

Effects of Decreasing Fertilizer on Growth,Yield and Efficiency of Allium sativum L.in Dali

In order to reduce the amount of chemical fertilizer application,control agricultural non-point source pollution,screen out the best way of the decreasing fertilizer,the effects of reducing the application of early maturing garlic fertilizer in Dali on garlic yield,single garlic rate and production efficiency were investigated.The results showed that,considering the cost and benefit of planting,the most suitable way of fertilizer reduction for garlic cultivation outside Erhai Lake Valley of Dali was application of 1000 kg/667 m^2 commercial organic fertilizer and controlled release fertilizer(22-8-12)67 kg/667 m^2 as base fertilizer;10 kg/667 m^2 urea at 3-leaf stage and 33.5 kg/667 m^2 chemical fertilizer(17-17-17)at 6-leaf stage as top-dressed fertilizer.