Dealing with Rain Water's continuous management methods of litchi and longan

Rain Water continues to manage litchi. The main work of managing litchi is to seize the time to harvest, protect fruits, prevent summer shoots from spreading, and control diseases and insect pests. 1. The fruits of early ripening March and early blossoms have been harvested, while those of late blossoms are not yet ripe. ① is in a hurry to apply fertilizer. There are more Rain Water this year, and fertilization is beneficial to the shoot shoot. Pruning for 10 days after fertilization (when the buds begin to sprout). Nitrogen fertilizer is the main way to promote shoot growth. ② fruit is not yet ripe, and a small amount of fertilizer can be applied, but trees with strong summer shoots should pay attention to fruit protection and proper control of summer shoots to prevent flowers from falling. In order to improve the quality and increase the content of soluble solids, ③ can spray more polynucleotides several times. ④ pays attention to the occurrence of stem borer, downy blight, anthrax and tapetum. 2. The mid-ripe varieties Shuidong, Heiye and Feizixiao are in the period of young fruit growth. ① according to the need to apply strong fruit fertilizer, this year has the fruit of black leaves, water east sit fruit is very good, early flower Feizixiao is also good, should be appropriate fertilization. According to the characteristics of more Rain Water and wet soil this year, we should mix fertilizer with soil as far as possible, the amount of fertilizer should not be too much, so as not to hurt the root, mainly compound fertilizer or mature organic fertilizer. ② to do a good job of drainage, especially to start the color change period, to prevent fruit cracking. Polynucleotides were added when spraying ③ after rain. 3. The early flowering and young fruits of late ripening varieties such as Guiwei, Nuomici and Huaizhi are larger, especially the cinnamon is almost as big as the fruit of Shuidong and black leaves, but the fruit of late flowering is only the size of soybean (4556, 6.00 and 0.13%). In some ① orchards, early flowering and fruiting are more, late flowering and fruiting are less, and young fruits with late fruiting turn yellow. Light touch will fall off, this is because the weak young fruits do not compete for nutrients early, the lack of nutrient supply leads to fruit drop, and the seeds of these fruits are also necrotic and more likely to fall off. Trees with more fruit should lose a small amount of fruit, but trees with less fruit may be caused by sprouting or pulling out of summer shoots, so summer shoots should be prevented or their growth should be controlled. When the terminal bud becomes soft and green, the branches with fruit can be cut around, or the branches with fruit and summer shoots can be sprayed with dilute concentration of Hua Guo Ling (80 kg of water per packet). If the young tree can be picked manually, the top of the summer shoot can be removed and 2-3 new leaves can be left. When the trees with many fruits have a small number of summer shoots, they do not need to be treated, especially cinnamon and Huai branches. Trees with more ② fruit should be fertilized with strong fruit fertilizer, mainly compound fertilizer and shallow application. In order to prevent late fruit cracking, fruit protection should be done well in orchards, fruit thinning should be appropriate, spraying auxin drugs such as 92 ○ and cytokinin should be prohibited, and foliar fertilizer containing calcium such as Lvfenwei 3 can be increased. The trees with ③ glutinous rice curd blooming in April are in the second or third peak of fruit drop, which can be protected by ring cutting and spraying fruit, and spray fruit Ling to control the summer shoot before it is pulled out. When the summer shoots of glutinous rice begin to sprout, the fruit will fall. If the majority of fruit growers do not pay attention, it is easy to ignore the harmfulness of the summer shoots. ④ according to the investigation, the late-flowering cinnamon and glutinous rice clover are harmful to stalk borer in some of the fallen fruits, so we should seize the time to spray on sunny days. Longan day Rain Water constantly, the main work of managing longan is to protect fruit and control insect pests. The main results are as follows: 1. Due to the emergence of summer shoots and few results, the fruit drop in some orchards is serious. In orchards where ① is pulled out before summer shoot germination or just after summer shoot germination, the trees are vigorous and have experience of ring cutting and fruit protection, or spray fruit Ling + Guodebao (the proportion of 1 ∶ 3 packet and 120jin of water). After the ② summer shoots are extracted, the young trees can be removed manually, leaving 2 Mel 3 leaves. Wiping buds will only promote the emergence of new shoots. If the adult trees are not convenient to be removed manually, they can spray Fruit Ling, adding 40 jin of water to each packet where there is no fruit, and 80 jin of water to each packet where there is fruit. Trees with many fruits can not deal with summer shoots. 2. Trees without fruit are mainly trimmed lightly. For the purpose of increasing the number of branches and expanding the crown, the young trees of ① retracted and pruned the overgrown branches and thinned the drooping branches and part of the inner bore branches. When thinning and cutting the inner bore branches, be careful to protect the trunk from direct sunlight so as not to damage the tree. The new shoots of the inner chamber branches of the ② adult or old trees continue to pull out, indicating that the tree itself needs to be renewed, so that part of the branches should be retracted according to the need, or the skylight should be opened so that the inner chamber branches can be retracted and pruned after seeing that the light grows strong. For this kind of tree, in addition to branch pruning, the root system also needs to be renewed. Consciously cut off 3 thick roots (more than 2 cm in diameter) during fertilization, and re-apply phosphate fertilizer + organic fertilizer to improve soil and promote the growth of new roots. It will take 3 years for the old tree to be renewed and rejuvenated. In April this year, dragon boat water will appear in mid-late June, when late-maturing lychees begin to mature, so we should pay attention to the occurrence of diseases so as not to affect the harvest. 3. In addition, I would like to remind growers that according to the information we have collected so far, there are no out-of-season varieties of longan, so beware of counterfeiting when buying seedlings.