1, citrus girdling
When the phloem of the main column or main branch of a citrus girdling plant is temporarily cut off from organic carbohydrates, the growth and development of roots are temporarily inhibited when they temporarily lose the nutritional support of organic carbohydrates, thus inhibiting the extraction of summer shoots and reducing the risk of fruit falling caused by fruit competition. According to the above principles, rotation cutting can be used as a measure to preserve citrus (including other fruit trees) and extract summer shoots.
2. How to cut oranges?
Citrus should be ripe in spring, and there is a tendency to extract summer buds. Trees with high water level are also suitable for circular cutting ... For trees with poor management, malnutrition and serious weakness, the cutting cycle is not suitable, otherwise, the trees will become weak and the output will drop. After the flowers wither to protect the fruit, they are generally treated once according to the strength of wood and the number of flowers, but for trees with strong growth potential and few flowers, they can be treated twice. The first treatment ended with Xie Hua, and the second treatment ended with the first physiological fruit drop. It is suggested that the cutting ring cutter should cut two-thirds of the big branches or main branches, and keep the larger branches in the middle and lower part of the crown from cutting. The wound healing time is about 15 days, and the ring is cut every 15 days. The wound of circumcision healed for about 30 days, and the effect of fruit preservation was better than that of circumcision. Generally speaking, girdling has achieved the purpose of preserving fruits. Ring cutting once every 15 days, orange anvil ring cutting twice, kiln anvil ring cutting once. The stripping width of forest rings is generally 2mm, and trees with few young fruits can be stripped to 3mm and 4 mm. The effect of stripping the anvil ring is superfluous, and the cutting ring is suitable. Weak trees, withered trees and lack of obvious tree species are not suitable for girdling.
3, ring cutting matters needing attention
Circumcision should be combined with other agricultural technical measures, which leads to the weakening of trees and the decline of yield. It should be noted that whether to circumcise or not and the number of circumcises should be determined according to the fertilization level and plant growth potential. Fruits are over-preserved, trees decay, and dead trees. Premature girdling makes it difficult for spring shoots to turn green. Most fruit farmers cut flowers on innocent sugar oranges every 15 days. By the end of the second physiological fruit drop peak, it is necessary to cut the ring three or four times continuously, because it is difficult to change the green color in spring. No. 15, the first molting has not yet begun to heal, and sometimes it is not enough to molt for three times. This is because there are many dangerous consequences, autumn shoots can not be released, trees wither and trees are peeled to death. Many fruit farmers don't know how long it will take to peel. If the dug tree doesn't heal, it is impossible to peel it for the second time.
In the above article, we mainly talked about how to cut citrus and some matters needing attention when cutting citrus. Citrus girdling is very important for our citrus growth. I hope that the ring cutting mentioned above can help us keep citrus fruits.