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大棚蔬菜进行根外追肥,对提两产量和品质有良好作用。茄果、瓜豆类蔬桨在幼果发育期根外喷施磷、钾肥,能促进果实膨大,并改进品质。 1、过磷酸钙等含磷肥料要浸泡过夜,取其上清液稀释后喷施。 2、根外追肥与喷药防治病虫害相结合。为防化学变化所导致的农药失效或对作物的不良影响,应随配随用,不可提前大量配制备用。 3、铵类的碱性化肥会使多数农药分解失效,一般不宜混合喷施。
Greenhouse vegetables for root top dressing, on the two yield and quality have a good effect. Eggplant, melon beans and oats in the development of young fruit outside the root spray of phosphorus and potassium, can promote fruit enlargement, and improve quality. 1, superphosphate and other phosphorus-containing fertilizer to soak overnight, take the supernatant diluted spray. 2, root top dressing and spraying combination of pest control. To prevent chemical changes caused by the failure of pesticides or adverse effects on crops, should be with the use of random, can not be prepared in large quantities in advance. 3, alkaline ammonium fertilizer will make most pesticide decomposition failure, the general should not be mixed spray.