The high-yield fertilization technology of the sugar orange, the fertilization of the sand sugar orange should pay attention to the methods and techniques to make the fertilizer less efficient, economical and safe. Fertilization should be avoided when the roots are buried in the vertical outside the canopy. The soil is too dry to fertilize the roots and reverse osmosis causes dehydration and root damage. The soil is too wet to fertilize, causing roots to lack oxygen and rotten roots. Therefore, fertilization should be based on the soil is not dry and not too wet. Do not apply nitrogen fertilizer, pay attention to increase the application of phosphorus, potassium, calcium, magnesium fertilizer.
The results are numerous, each branch is covered with fruit sugar orange trees, rarely spring shoots, summer shoots and autumn shoots. When the fruit is ripe, it is full of fruit, few leaves, the leaves are yellow after harvest, and they fall off (Related reading: What should I do if the sugar is falling seriously?) The tree is in recession. In the second year, there will be less flowers and less fruits, and even no flowers will be fruitless. If the fertilizer is applied before harvesting, the nutrients should be replenished in time, so that the tree has higher nutrient level before and after fruit picking. After picking the fruit, the tree will not decline, the leaves will remain dark and will not fall off, the second year will be More flowers and more fruits. The specific practices are as follows:
At the end of November, when the sugar orange fruit begins to color in the middle of December, it is necessary to apply the pre-harvest fertilizer, mainly based on NPK, supplement the organic fertilizer, the plants above five years old, or the tree with a result of 50 kg or more. The application of NPK (20~20~20) is 150~200g for the whole nutrient water-soluble fertilizer, 350~400g for the humic acid active liquid fertilizer, 50~60kg for the human and animal manure with clear water or biogas slurry or simmering. Stir well, so that the fertilizer is completely dissolved, and evenly applied to the topsoil under the canopy.
In addition, the right way fertilizer net encyclopedia column Xiaobian warm reminder: sand sugar orange high-yield fertilization technology should also be sprayed once every 7~10 days foliar 1000 times green Fenwei No. 1, 600 times amino acid active liquid fertilizer mixture, or 0.2% urea, 0.3% potassium dihydrogen phosphate, 800 times humic acid active liquid fertilizer mixture, sprayed continuously for 3~5 times, evenly spray all the branches and fruits inside and outside the canopy to start dripping with water drops. Recommended reading: sand sugar How to fertilize orange cultivation can produce high yield.
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