The root system of vegetable seedlings is still underdeveloped, but the requirements for fertilizers are very high, and some thin, fast-acting fertilizers should be applied appropriately. Vegetables must be supplied with sufficient fertilizer during the vegetative growth period and fruiting period. Measures such as the balance of nitrogen, phosphorus and potassium fertilizers and micro-fertilizers, and the combination of fertilization and irrigation to give full play to the increasing yield of fertilizers. According to the characteristics of vegetables, organic fertilizer and chemical fertilizer should be applied together. Organic fertilizer can not only provide a variety of nutrients for vegetables, but with the decomposition of organic fertilizer, it is also conducive to improving yield and quality. Different vegetables require different fertilization techniques and methods. 1. Leafy vegetables: leafy vegetables mainly include cabbage, green vegetables, spinach, amaranth, etc. The top dressing of leafy vegetables is dominated by nitrogen fertilizer, but in the growing period, nitrogen fertilizer is also applied, and phosphorus and potassium fertilizers need to be added. Such as the cultivation of Chinese cabbage, the two fertilizations before entering the rosette stage and before the Baoxin are the key to high yield. If the supply of nitrogen fertilizer is insufficient during the whole growth period, the plant is short and the tissue is thick and hard. The leafy vegetables cultivated in spring are also easy to bolt early. If the late-stage leafy vegetables have insufficient phosphorus and potassium fertilizers, they are often not easy to form. 2. Fruits and vegetables: Fruits and vegetables include melons, eggplants and beans, and the edible parts are all reproductive organs. Generally, seedlings require more nitrogen fertilizer, but excessive application of nitrogen fertilizer can easily lead to longevity. On the contrary, it can prolong flowering and result in flowering and fruit drop. During the reproductive growth period, the amount of phosphorus fertilizer needs to increase sharply, and the amount of nitrogen fertilizer needs to decrease slightly. Potash fertilizer, control the amount of nitrogen fertilizer. After the cucumber sits on the melon, the fertilizer should be re-applied, and each batch of melon needs to be supplemented with water. 3. Root vegetables: Root vegetables mainly include radish, carrot, etc. The edible part is meaty root. Root vegetables should apply more nitrogen fertilizer in the early stage of growth to promote the formation of hypertrophic green leaves; in the middle and later stages of growth (succulent root growth period), more potassium fertilizers should be applied to properly control the amount of nitrogen fertilizer to promote the transport of leaf assimilation substances to the roots in order to form strong fleshy root . If there is too much nitrogen fertilizer and insufficient potassium fertilizer in the later stage of root vegetable growth, it is easy to make the aerial parts long, the rhizomes are small, the yield decreases, and the quality deteriorates. Organic fertilizers should be applied to vegetables grown in facilities. Vegetables in greenhouses and other protected areas are much more fertilized per unit area than open-field vegetables, and because there is no rain leaching, most of the remaining fertilizer remains in the soil, making the soil solution nutrient concentration too high, preventing the roots from absorbing nutrients, so When cultivating vegetables in a protected field, the aftereffects of the previous fertilizer should be fully considered, and more organic fertilizers should be applied, and less chemical fertilizers should be applied to avoid damage to the vegetables due to salt accumulation. Source: China Cooperation Times (Xinhuai) Golf Stand Bag,Golf Club Travel Bag,Professional Golf Stand Bags Longzhao Technology (Guangdong) Company Limited , https://www.kalynar.com
April 26, 2024