How to achieve different fruit ages and flower weights to preserve fruit and improve fruit set rate is the key to high quality and high yield.
1. Spraying nutrient-type nucleotides When there is a lot of rainy weather, the citrus tree body can't carry out photosynthesis. After the flowering, the tree body is poorly nutritious and easy to produce fruit drop. It can spray 30-50 mg/L of fruit, and it can supplement the nutritional status due to insufficient photosynthesis, less photosynthetic products and unfavorable fruit.
2, ring cutting fruit for the weather reasons, spraying is also difficult to carry out, you can use the young results tree to cut the trunk, the adult tree is the main branch (but the weak tree do not cut). Cutting the branches and phloem can supply the above-ground nutrients to the growth and results of young fruit and new shoots. Individually prosperous trees can be cut once every two months, and the fruit preservation effect is better.
3, drug preservation results recommended by the relevant state departments, to prevent the first physiological fruit drop with the stalk using cytokinin (6-BA) 20-40 mg / liter, good effect on the first physiological fruit drop, and the second The second fruit is invalid. The second agent is 920 (gibberellin), which is effective for both the first and second physiological fruit drop, calculated by one gram of powder against water, and the sugar orange is 40-60 kg of water, so that the fruit is not preserved. Will cause abnormal leaves. In the normal weather, the first drug period is related to the amount of young fruit, and the orchard with less young fruit should be sprayed at 2/3 of the flower; the medium orchard with young fruit is sprayed 3-5 days after the flowering; Many orchards can be sprayed 5-7 days after the flowering.
4, wipe the summer tip fruit when the summer shoots up to 1 inch erase, wipe every 7-10 days. Wipe it several times until the fruiting period. Especially for young and old trees and young trees, it will have the effect of smearing the fruit.
5, Shi Xie Huafei Xiehua timely in time to thank Huabao fruit fertilizer. The tree with a lot of flowers consumes nutrients due to flowering. It is estimated that 50-80 kg of orchard produces 0.3-0.4 kg of compound fertilizer per plant; the orchard produces more than half a catty of compound fertilizer; Do not apply the orchard around the pound, so as not to promote the growth of summer, it is more difficult to preserve the fruit, if the leaf color is slightly worse, it can be supplemented with foliar fertilizer.
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