合理施肥,可以减轻蔬菜的病虫发生与危害。几年来的试验表明:蔬菜病虫害的发生与施用肥料的种类、用量、浓度、时期和方法有一定的相关性。我们在试验示范的基础上推广了300万亩次,有较好的效果。 Rational fertilization can reduce the occurrence and harm of vegetables and pests. Several years of experiments show that: the occurrence of vegetable pests and the application of fertilizer types, dosage, concentration, timing and methods have some relevance. We have popularized 300 million mu on the basis of experimental demonstration and have good results.