A look at the different types of vegetables vegetable needs different fertilizer characteristics, such as leafy vegetables like nitrogen, beans like phosphorus and potassium, Chinese cabbage, cauliflower, radish, etc. are more sensitive to boron, leguminous and cruciferous molybdenum sensitive , Short-term vegetables need less fertilizer, continuous flowering results of vegetables need more fertilizer, yam vegetables avoid chlorine, onion and garlic vegetables molybdenum and so on. Therefore, the application of foliar fertilizer to vegetables will vary according to different types, so that scientific selection of fertilizers will be beneficial to avoid disadvantages. Secondly, there is a difference between the proportion of demand for nutrient components and the demand for vegetables at different stages of growth and development. Generally, the seedling needs less fertilizer, and the flowering result requires a large amount of fertilizer. Therefore, when applying the foliar fertilizer, it should be done by spraying small amount of seedlings in the early stage to make up for nutrients and promote seedling growth. In the late growth period, more shoots will prevent premature aging and promote high yield. . Third, look at the growing trend of growing vegetables. The growth of vegetables is luxuriant, and the flowers are more fruitful. This shows that the supply of fertilizer and water is sufficient and the growth is good. It can be applied topdressing less; if there is yellowing, small flowers, serious diseases and insect pests, growth is blocked, and growth is poor, etc. Then explain the lack of vegetables, lack of nutrients, then should carefully find the cause, symptomatic fertilizer, timely supplement nutrients required, such as tomato umbilical rot should consider the application of calcium fertilizer, cucumber appetite less melon, should be taken control nitrogen phosphorus potassium . Fourth, see fertilization weather conditions open-air vegetable growth influenced by light, temperature, gas, heat and other natural conditions, in order to improve the efficiency of foliar spray, you must master the temperature, humidity and wind direction when spray fertilizer, spray fertilizer suitable temperature is generally At 20 to 28°C, the air humidity is 60% to 70%. At this time, all the stomata in the leaves of the vegetables are opened, and the leaves absorb nutrients more quickly. If the temperature is high and the humidity is low, the fertilizer solution is rapidly evaporated and dried on the leaves and not only absorbed. The effect is poor, and it is prone to fertilizer damage. Therefore, the foliar spraying fertilizer should be sprayed in the evening after 7 to 10 o'clock in the morning and after 16 o'clock in the afternoon. The best choice is spraying without wind and cloudy weather. In addition, in the cold and rainy seasons of winter and spring, cold and heat fertilizers should be used, such as plant power 2003, etc. In the summer and autumn hot and dry season, drought-resistant and cooling fertilizers should be selected, such as Opal, plant amino acid, humic acid and other foliar fertilizers. Five Seen Foliar Fertilizer Varieties There are a wide variety of foliar fertilizers on the market. The chemical composition is different, the nature of the application is different, and the range of applicable vegetables is naturally different. It is necessary to know the characteristics of the foliage fertilizer in detail, clearly apply the scope, accurately grasp the concentration and dosage of the foliar fertilizer, and be familiar with the operating procedures of liquid mixing, especially the mixing. Matching, to prevent a variety of inappropriate fertilizer and drug mix, to avoid causing reduced fertilizer efficiency and efficacy, and even fertilizer damage. Familiar with spray techniques, generally spraying 50-75 kg per acre with fertilizer solution, so as to make the stems and leaves of vegetables (including positive and negative surfaces) evenly wet Surgical Protective Clothing,Medical Surgical Protective Clothing,Surgical Protective Coverall,Protective Body Suit Guangdong Jia Mei Biological Technology Co.Ltd , https://www.jaymeimask.com