How to Promote Flower Bud Differentiation after Citrus Harvest
Timely control of water and the formation of flower buds in the cut-off period, proper control of the water supply and root cutting of the plum garden is one of the effective measures to promote flower bud differentiation. Citrus fruit trees usually begin to control the water during the period from heavy snow to winter solstice. During the water control period, the leaves of autumn shoots are required to have a few micro-volumes at noon on sunny days, and they are restored in the morning. At the same time, after the old crop of autumn shoots mature until December flower bud differentiation, combined with water control to cut off the root to promote flower, the effect will be more significant. The method is to cut the roots around the canopy, and the young trees and strong trees are about 15 cm deep, and the middle-aged and old trees are about 10 cm shallow. After the water control and root cutting, the color of the autumnal tip should have obvious chlorosis. Ring cutting (or cerclage) promotes rosary cuts or cerclage (wire) is the most significant and most responsive method of citrus flowering techniques. The cut or ligation time is optimal from late November to late December. The ring-cutting method is to cut a circle around the main stem or the 1st to 2nd-level branches, and the cut-off cortex does not hurt the degree of the operative mass. The canopy faded green about a week after the ring was cut. The cerclage is used on the 16th or 14th iron wire, and its position is in accordance with the ring cutting method. After the cerclage, 2/3 of the wire is penetrated into the cortex without harming the quality of the surgery, so as to achieve the goal of flower promotion. It is a safer and more effective method for the promotion of flowers in citrus. The practice is to use the hemp rope or plastic tape to pull the big branch of the upper part of the tree crown outward (the rope is fixed on the ground) after the autumn shoots become mature or in December, so that the canopy will be exposed in an appropriate “hollow†shape, and then after some time (about 3 to 5 weeks) After the color of the leaf is slightly faded, it is unbound. Curved branches, twisted branches and curved branches and twisted branches are auxiliary measures to promote flowering, mainly for some young trees that are too prosperous or difficult to flower. The specific approach is: 11 to December after the autumn of the old mature, with a plastic belt will need to pull the bending treatment of the strong long leg bent, until the leaf color faded from dark green to light green, you can untie the tie. Twisted branches are mainly for the individual branches of the top of the canopy, which are thick and long. When the flower buds are differentiated, the bases of the branches are twisted by hand and are required to injure the cortex and xylem. After several days, the dark green leaves fade to light green, indicating that the flowers have been promoted. effect. Application of plant growth regulators to promote flowers At present, the commonly used plant growth regulators are: 15% paclobutrazol 300 times or fruit trees to promote flowering agent, after the autumn shoots mature and later spraying the leaves, even spray 2 times, every 20-30 days Times; 2,4-D20 to 40 mg/L, autumn shoots are sprayed once after being cooked, but this drug is more sensitive and should be used carefully according to different breeds. Paclobutrazol has an inhibitory effect on citrus growth and is generally not suitable for use on older trees and weak trees. Human Ultrasound Scanner,Color Doppler Machine,Doppler Ultrasound Scanner,Notebook Color Doppler Scanner Mianyang United Ultrasound Electronics Co., Ltd , https://www.uniultrasonic.com