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利用化肥或有机肥防治农作物病虫害,不仅经济、安全、有效,同时又具有施肥作用和不伤害天敌、不污染环境等特点,很值得在生产上推广。 氮肥 1.碳酸氢铵、氨水等铵态氮肥具有较强的挥发性,对害虫有一定的刺激、腐蚀和熏蒸作用,尤其对红蜘蛛、蚜虫、蓟马等体形小、耐力弱的害虫,效果更好。施用方法:用1％碳酸氢铵或0.5％氨水溶液均匀喷雾,每隔5—7天喷一次,连喷2—3次;
The use of chemical fertilizers or organic fertilizers to control pests and diseases of crops is not only economical, safe and effective, but also has fertilizing effects and does not harm natural enemies and does not pollute the environment. Therefore, it is worth promoting in production. Nitrogen fertilizer 1. Ammonium bicarbonate, ammonia and other ammonium nitrogen fertilizer has strong volatility, there is a certain stimulation of insects, corrosion and fumigation, especially for red spider, aphids, thrips and other small size, weak endurance pests, the effect better. Application method: 1% ammonium bicarbonate or 0.5% ammonia solution spray evenly, spray every 5-7 days, with spray 2-3 times;