Q: At present, citrus grows very well. How to strengthen the management of citrus?
A: Strengthening the management of fertilizer in the middle and late stages is an important guarantee for improving the quality of citrus. Therefore, the most important measure is to timely supplement potassium.
Q: Why do you pay special attention to potassium supplementation in the middle and late citrus?
A: Potassium has a great effect on citrus. There are mainly the following points.
First, the demand for potassium in the citrus fruit expansion period increased. In the absence of potassium, the fruit becomes smaller, the acidity is high, the coloration is poor, and even the fruit is cracked.
Second, the lack of potassium also caused the tree to weaken, the roots grew poorly, and the ability to resist drought decreased.
The third is that citrus is deficient in potassium, not only is the yield low, but the quality is declining.
Q: What effect will it have on potassium supplementation in citrus trees that are deficient in potassium?
Answer: After potassium supplementation in potassium-deficient citrus trees, the fruit is large and heavy, the content of soluble solids is increased, the content of vitamin C is increased, the acidity is decreased, the flavor is rich, the peel is hard, the coloration is deepened, and the cracked fruit and wrinkled fruit are reduced before harvesting. The organization is enriched and the drought resistance is enhanced.
Q: How is potassium deficiency in citrus trees caused?
A: There are many reasons for the lack of potassium in orange trees, mainly in the following aspects.
First, citrus trees are generally planted on acidic soils. In the southern acid soils, the available potassium content is generally low, which is an external cause; while citrus trees are also potassium-producing fruit trees, and the large amount of potassium required is an internal cause.
Second, the amount of organic fertilizer applied is insufficient, and the source of potassium supplementation is also a cause.
The third is that the orange farmers have a habit of applying nitrogen fertilizer, which causes the fertilizer to be unbalanced, which affects the absorption of potassium by citrus trees.
The fourth is the lack of water and drought in the middle and late stages of mountain citrus orchards, which affects the absorption and utilization of potassium by roots.
Q: What potassium supplementation measures should be taken to prevent potassium deficiency in citrus trees?
A: Generally, when applying the base fertilizer in September, pay attention to the application of farmyard manure or cake fertilizer containing more potassium. The adult citrus tree is about 2 kg per plant. At the same time, pay attention to foliar application of potassium fertilizer, spray 0.2~~0.3% potassium dihydrogen phosphate 2~3 times, spray once every 7~10 days.
Q: Is there any harm if excessive potassium is applied?
A: Potassium fertilizer application can not be excessive, excessive is counterproductive. Such as causing thick skin, poor coloration, less juice, low soluble solid content, fruit ripe and green, and easy to infect brown rot and gum disease.
Expert tips:
â— Fertilizing potassium in the middle and late stages of citrus not only improves yield, but also improves its quality.
â— The citrus-growing soil is an external cause of potassium-deficient acid soil, and citrus is a potent potassium fruit.
â— Potassium supplementation in citrus trees is beneficial to the balanced use of fertilization and nutrients.
Author: Chen Shou Lun
Source: Economic Daily Rural Edition
A: Strengthening the management of fertilizer in the middle and late stages is an important guarantee for improving the quality of citrus. Therefore, the most important measure is to timely supplement potassium.
Q: Why do you pay special attention to potassium supplementation in the middle and late citrus?
A: Potassium has a great effect on citrus. There are mainly the following points.
First, the demand for potassium in the citrus fruit expansion period increased. In the absence of potassium, the fruit becomes smaller, the acidity is high, the coloration is poor, and even the fruit is cracked.
Second, the lack of potassium also caused the tree to weaken, the roots grew poorly, and the ability to resist drought decreased.
The third is that citrus is deficient in potassium, not only is the yield low, but the quality is declining.
Q: What effect will it have on potassium supplementation in citrus trees that are deficient in potassium?
Answer: After potassium supplementation in potassium-deficient citrus trees, the fruit is large and heavy, the content of soluble solids is increased, the content of vitamin C is increased, the acidity is decreased, the flavor is rich, the peel is hard, the coloration is deepened, and the cracked fruit and wrinkled fruit are reduced before harvesting. The organization is enriched and the drought resistance is enhanced.
Q: How is potassium deficiency in citrus trees caused?
A: There are many reasons for the lack of potassium in orange trees, mainly in the following aspects.
First, citrus trees are generally planted on acidic soils. In the southern acid soils, the available potassium content is generally low, which is an external cause; while citrus trees are also potassium-producing fruit trees, and the large amount of potassium required is an internal cause.
Second, the amount of organic fertilizer applied is insufficient, and the source of potassium supplementation is also a cause.
The third is that the orange farmers have a habit of applying nitrogen fertilizer, which causes the fertilizer to be unbalanced, which affects the absorption of potassium by citrus trees.
The fourth is the lack of water and drought in the middle and late stages of mountain citrus orchards, which affects the absorption and utilization of potassium by roots.
Q: What potassium supplementation measures should be taken to prevent potassium deficiency in citrus trees?
A: Generally, when applying the base fertilizer in September, pay attention to the application of farmyard manure or cake fertilizer containing more potassium. The adult citrus tree is about 2 kg per plant. At the same time, pay attention to foliar application of potassium fertilizer, spray 0.2~~0.3% potassium dihydrogen phosphate 2~3 times, spray once every 7~10 days.
Q: Is there any harm if excessive potassium is applied?
A: Potassium fertilizer application can not be excessive, excessive is counterproductive. Such as causing thick skin, poor coloration, less juice, low soluble solid content, fruit ripe and green, and easy to infect brown rot and gum disease.
Expert tips:
â— Fertilizing potassium in the middle and late stages of citrus not only improves yield, but also improves its quality.
â— The citrus-growing soil is an external cause of potassium-deficient acid soil, and citrus is a potent potassium fruit.
â— Potassium supplementation in citrus trees is beneficial to the balanced use of fertilization and nutrients.
Author: Chen Shou Lun
Source: Economic Daily Rural Edition
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