Vegetables sprayed with foliar fertilizer "three look"
Spraying foliar fertilizer can supplement the nutrients needed for vegetable growth in time, and has the advantages of small amount of fertilizer, high utilization rate, fast effect and obvious effect. How to spray foliar fertilizer? Specifically, pay attention to "three look".
Take a look at the types of vegetables. Different vegetable types have different fertilizer requirements, such as leafy vegetables like nitrogen, legumes like phosphorus and potassium, Chinese cabbage, broccoli, radish, etc. are more sensitive to boron fertilizer, legumes and cruciferae are more sensitive to molybdenum fertilizer, fast growing Vegetables require less fertilizer, continuous flowering and fruiting vegetables require more fertilizer, potato and potato vegetables avoid chlorine, and onion and garlic vegetables avoid molybdenum.
Second, look at the growth period of vegetables. Vegetables require less fertilizer at the seedling stage and a larger amount at the flowering and fruiting stage. Therefore, when applying foliar fertilizer, spray small amounts of leaflets in the early stage to supplement nutrients to promote seedling growth, and spray more in the middle and later stages to prevent premature aging and promote high yield.
Three look at the appearance of vegetables. The vegetables grow luxuriantly and have luxuriant leaves and flowers, which means that there is sufficient fertilizer and water supply and the growth is good. If there are leaf yellowing, plant dwarfing, small flowers and small fruits, serious diseases and insect pests, poor growth, etc., it means that vegetables are short of fertilizers and nutrients. At this time, you should carefully find the reasons, fertilize them symptomatically, and supplement the required nutrients in time, such as umbilical rot in tomatoes Diseases should be considered supplemental calcium fertilizer, cucumbers appear stubborn melon less, should be used to control phosphorus and potassium fertilizer.
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