Different types of vegetables, different types of fertilizers are needed, and even different fertility stages of the same vegetable require different types of fertilizers. If the foliar fertilizer is not applied properly, many fertilizers are used, and it is difficult to receive the effect of increasing the yield and improving the quality.
Leafy vegetables refer to fast-growing vegetables mainly grown from fresh leaves, petioles, or tender stems, such as cabbage, greens, leeks, spinach, and celery. This type of vegetable needs more water and fertilizer, especially more sensitive to available nitrogen and urgent. If nitrogen is insufficient, the leaves are yellow-green, growth is slow, and the yield is greatly reduced. Therefore, in addition to applying basic fertilizers, leafy vegetables should also be sprayed with 1% to 2% urea (ammonium sulfate) solution at the seedling stage and middle and later stages, spraying once every 7 to 10 days, and continuously spraying 2 to 3 times. Can play a cost-saving and accelerate the effect of blade pumping. If you add in the urea water Green Fenwei II (2000 to 2500 times), 802 (2000 to 3000 times), Ye Bao (1000 times) and other foliar fertilizer, the effect of increasing production is more significant.
Fruits such as fruits and vegetables are more balanced for nitrogen, phosphorus, potassium and trace elements (mainly boron, zinc and molybdenum). At the seedling stage, nitrogen is required to be heavier than phosphorus and potassium, and the three elements at the flowering stage all require more. During the seeding stage, phosphorus and potassium are required to weigh more than nitrogen. Such as seedlings, flowering nitrogen deficiency, it is easy to premature aging and small fruit; too much nitrogen, it is easy to grow, fall off and late maturity. Therefore, fertilization of fruits and vegetables should be more scientific, both seedlings use 1% to 2% urea solution added 3000 times the 802 liquid spray, in order to benefit the roots of long leaves; flowering phase selection of 1% to 2% urea mixed 0.1% ~0.3% borax and 1000 times of plant power 2003 solution, spraying once every seven days, spraying 2~3 times, to increase fruit setting rate and prevent "flowering but not realizing"; use 1% urea aqueous solution plus 0.3% phosphoric acid for result period The spraying of potassium dihydrogen solution, spraying once every 10 times, and spraying 2 or 3 times, can satisfy the nutrients needed for the growth and the results of vegetable plants, and has a significant effect on reducing the number of falling flowers and fruits.
Roots and vegetables refer to vegetables that are harvested with a fleshy, fleshy root. Such as radish, taro, root celery and root mustard, green onions, garlic, yams, potatoes, lotus root and so on. Its physiological characteristics are: the demand for phosphorus and potash fertilizer is more than nitrogen fertilizer in the whole growth period, especially the demand for potash fertilizer in the middle and late period is more sensitive. Therefore, in addition to the need for a small amount of nitrogen fertilizer at the seedling stage, these vegetables should also be given potassium and phosphate fertilizers in the middle and later stages to meet the needs of roots and stems. Foliar fertilizer can use 1% ~ 2% of superphosphate soaking solution, or 0.1% ~ 0.3% of potassium dihydrogen phosphate solution, or 5% ~ 10% of ash soaked filtrate, or 1% ~ 2% of potassium chloride (potassium sulfate) aqueous solution. In addition to the solution of turfgrass, if other solutions can be added 1000 times the green Fenway 1, or 1000 times the plant power solution, spray once every 7 to 10 days. Even spraying 2 or 3 times, the effect of increasing production is more significant.
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