Tomatoes are very sensitive to fertilizers. Top dressing is too late too late, too little too much, too concentrated, is not conducive to the production of tomatoes. Therefore, reasonable fertilization is an important measure for the high yield of tomato, and the principles of “one control, two promotion, three sprays, and four avoidances†should be mastered.
A control: Before the colonization of tomatoes to fruit set, the top dressing technique should be controlled and top dressing to see if the seedlings are topped with fertilizers. If the top dressings are too concentrated too early, the stems and leaves will be large, the leaves will be dark green, and the plants will grow in length, even Caused by falling flowers. Therefore, in addition to the case of a serious lack of fertilizer in the case of slightly applied manure or biochemical organic liquid fertilizer (500 times), generally should be controlled topdressing.
Second promotion: Tomato topdressing and harvesting period should be topdressing, promote growth and development, after the first inflorescence and fruit set, and the fruit has walnuts, the plants should be branched, the young fruit should be enlarged, but also continue to flowering results The consumption of nutrients is large. At this time, quick-acting fertilizers should be quickly applied 1-2 times. Generally, 30% concentration of human excreta or 5% sulfur-containing compound fertilizer leaching solution should be applied to ensure that the plants do not de-fertilize and promote rapid expansion of young fruit. Must continue to provide nutrients in order to meet the needs of growth, otherwise it will cause late defermentation, and affect the fruit development, resulting in premature plant failure. At this time, the method of diligent chase should be adopted. Usually, a 40% concentration of human excreta or 5% sulfur-containing compound fertilizer leaching solution is applied every 10 days on sunny days.
Three sprays: The tomato not only absorbs nutrients from the soil from the roots, but also absorbs mineral nutrients and sugars from the leaves to promote fruit and seed development. Therefore, during the fruit growth period, especially when the continuous raining in the early stage can not be used for top dressing, 2-3 times of leaf should be used for spraying fertilizer. It can be applied by 500-300 times liquid of Tianbian Biochemical Organic Liquid Fertilizer, and can also be used to chelate multiple composite micro-organisms. Fertilizer 500 times spray to improve the quality of tomatoes.
Four bogey: Tomato top dressing, avoid high-concentration fertilizer, avoid wet soil fertilization, avoid high temperature fertility at noon, avoid too concentrated fertilization, one easy to make the plant leggy, two easy to produce fertilizer damage, wet soil fertilization, caused by falling, Physiological diseases such as defoliation and fruit drop, fertilization under high humidity conditions, due to high soil temperature, plant evaporation, fertilization, will hinder the normal operation of plants according to the Department, causing plant death. Large wet fertilization and application under high temperature conditions can also cause bacterial wilt to occur. Fertilization should take place in the early morning or early evening.
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