The demand for calcium for citrus is very high, second only to nitrogen and potassium, and calcium deficiency will seriously affect the current year's yield and fruit quality. Guangdong's soil is acidic, and its calcium deficiency is serious. The amount of calcium in the leaves is also far below the international level. However, regular fertilization measures for oranges do not include the use of calcium fertilizers. Therefore, it is the last chance for citrus to use lime in the autumn shoots.
1, calcium can strengthen the autumn trees, strong shoots, strong fruit, root promotion: orange in the autumn shoot period is another new root development of fruit trees, this time through the roots to add water-soluble available calcium, can promote new root development, At the same time, the absorption of large amounts of calcium in the new roots can be transmitted through the transpiration to the tip leaves, thus strengthening the autumn shoots, promoting the aging of autumn shoots, and the health of the new leaves, while also significantly increasing the fruit weight.
2, calcium supplementation can also effectively prevent various diseases: a large number of foreign experiments have shown that orange trees use more water-soluble calcium fertilizer, can effectively reduce the fruit and tip leaf disease, skin appearance is smoother, longer shelf life.
According to the severe nutritional status of citrus this year, it is recommended to use micro-pastoral rooting to prevent fruit cracking caused by the phenomenon of calcium reflux. At the same time, strong shoots and strong fruits promote new root development. Micro-composite root calcium is a highly concentrated liquid calcium, containing 160g/l calcium, nitrogen-free, and contains adjuvants that are conducive to root absorption. With only a small amount, calcium can be effectively applied to fruit trees. The application method can use micro-potash calcium 1000 g/mu, soaking the roots after watering, and spraying more than 50 kg of fertilizer liquid per tree in arid climate. Rinse roots after raining. Drench 20 tons or more of each tree with fertilizer solution. Rinse twice for 10-20 days. Can be mixed with other fertilizers, the best fertilization method is to use micro-potash calcium + micro-filling fruit, fertilizer, soaking and rooting twice, to fully supplement all the key nutrients needed for autumn shoots, significantly reduce the cracking caused by calcium reflux phenomenon, At the same time can reduce the skin of citrus fruit, improve the appearance of peel, but also promote the extraction of strong and neat autumn shoots, and the cost is not higher than the traditional autumn shoots. â–¡ Pan Yajun