Citrus prevention yellow tree and yellow leaf protection scheme
The first stage: spring shoots-flowering common problems: solution: flush: 1.5 kg, 10,000 kg of water, 200 trees, conditioning soil acidity; 2. 15 kg of calcium, more than 10,000 kg of water, 200 Tree, promote roots and strong roots, reduce spring shoots, small leaves, flowers and leaves, do not turn green; Spraying: 2 two / tree, spray with large fertilizer or buried spraying: 1500 times boron, flower buds exposed white-before bloom Spray 1-2 times to strengthen flower buds, prevent and reduce weak flowers and deformed flowers, and improve fruit retention rate in the later stage;
Zhou Qiong, Jiangmen, Guangdong, laughed. Calcium application was started during the spring shoot period. The root system was good and the spring shoots were very robust. The spray of boron on the leaves not only brought more flowers, but also opened a lot of flowers. The rainy days during the fruit preservation period still kept the fruit.
Second stage: fruit preservation period-stable fruit period:
Solution: flush: 15 kg of calcium, 10,000 kg or more in water, pour 200 trees, pour once, strengthen the tree vigor, and increase the fruit setting rate; spray: 2 two / tree, spray with large fertilizer or buried spray : 1500 times of boron, 80% of citrus Xiehua started spraying 3 times in a row, 10-12 days apart, plus 920 in the first two times to reduce physiological drop, and the young fruit swelled evenly and quickly;
Qingyuan, Guangdong Lai Weinan must be leached with calcium once a spring shoot. The strong flowers and fruits are made according to the leaf spray scheme. The sugar orange flowers are full of strong flowers. The trees are full of fruits after the flowers are bloomed, and the fruits are particularly fast!
The third stage: fruit expansion period-crack prevention period
Solution: flushing: 5 kg, with more than 10,000 kg of water, 200 trees, conditioning soil acidity, efficient potassium supplementation, promoting fruit swelling, and preventing fruit cracking caused by potassium deficiency in the later period; spraying: continuous spraying 2-3 times , To prevent calcium deficiency and crack fruit, reduce the yellow stem caused by magnesium deficiency;
Fourth stage: Common problems in autumn shoot period:
Solution: flushing: 15 kg of calcium + 5 kg of magnesium, more than 10,000 kg of water, and 200 trees, to promote the germination of autumn shoots neat and strong; (for those who cannot spray water and fertilizer, you can use 2 or 2 trees, apply with large fertilizer or (Buried) Spraying: When the autumn shoots start to germinate: 500 times + 1000 times, two consecutive sprays; When the autumn shoots turn green: 1000 times + 1000 times, spray 1-2 times, reducing autumn shoot flowers and leaflets And does not turn green, prevent yellow pedicles from falling fruit and promote flower bud differentiation;
Guangdong, Guangdong, China Xu Yanmei's sugar oranges were drenched with calcium + magnesium + once in June, July and August. The autumn shoots released were neat and robust, the leaves were green, the useless shoots next door were weak, and there were variegated leaves. Citrus 1.jpg Stage Five: Frequently Asked Questions during the Color Transition Period:
Solution: Chong Shi: For fruit farms with many fruits, small fruit, and poor tree potential: 15 kg of calcium + 5 kg, more than 10,000 kg of water, 200 trees, and reduce the proportion of unripe fruits caused by insufficient nutrition; Spraying: 500 times, spraying twice when the fruit starts to change color, and spraying three times when the fruit is small, the color is uniform, the sand rises, the fruit is hard and sweet, and the weight is obvious.
According to the tree-preserving plan, four water and fertilizers were applied in accordance with the tree preservation plan. The original yellow tree was restored to life and its leaves were green and bright. Spraying was started four times a year in October. The color of the tribute was uniform and large. , High hardness, high selling price 2 Mao / jin!
Master Ding Guoxing from Qingyuan, Guangdong applied 3 times of calcium + a year, the leaves are bright, the tips are well pumped, and the tree is strong; spraying 10 times, the fruit is hard and heavy, there is no frosted fruit, and the selling price is 2 Mao / jin!
Sixth stage: Common problems during picking-restoration period:
Solution: Sprinkle or bury: Granules, two fruit trees per tree / half, small trees halved, add when applying winter fertilizer, reduce yellow leaves and fallen leaves after harvest, restore tree vigor (strike once before and after winter fertilizer, conditioning The soil is acidic, which greatly improves the utilization rate of winter fertilizer.) Spraying: 1000 times + 1000 times (weakness plus 500 times), spraying 1-2 times after picking fruits, protecting leaves and promoting flowers.
Huang Yaoxin, a two-year-old tree in Zengcheng, Guangdong, started to yellow before fruiting. After pruning, the winter fertilizer was sprayed on each tree for half or two. The spring shoots extracted in April were very beautiful, the leaves were green, and the oil was reflective. Useless The variegated leaves are obvious. I knew it and I would use it in the whole garden.