How to manage red meat honey pomelo in summer?

How to manage red pomelo in summer? What are the main things that need to be managed? Also ask netizens to help guide summer is red flesh pomelo root, long summer shoot, young fruit and fruit expansion period, this period is the important period of fertilization throughout the year, but also the key occurrence period of diseases and insect pests. The detailed management methods of red-meat pomelo in summer are listed below for netizens 'reference. A, timely application of strong fruit fertilizer to fruit trees: timely application of strong fruit fertilizer to pomelo trees can improve pomelo strong shoots, strong fruit, improve quality and yield. Generally, fruit trees with 50 kg fruit are applied with about 2.5 kg of ternary compound fertilizer, and urea 1 kg and potassium fertilizer 0.25 kg can also be applied in 5 times. Conditions can be appropriate to apply some trace elements such as 0.2% potassium dihydrogen phosphate, 0.2% borax mixture foliar spray 1~2 times. II. Fruit thinning, shoot thinning and summer shearing of red-flesh pomelo: thinning, fruit thinning and summer shearing of pomelo trees are to ensure nutrient accumulation, adjust growth vigor and promote the transfer of vegetative growth to fruit reproduction growth. 1. Pomelo thinning method: thinning is to thin out all summer shoots, thinning summer shoots can reduce pest damage and improve fruit setting, and promote fruit expansion. Thinning young trees is to erase early summer shoots from "summer" to "small full" and keep late summer shoots. Summer shoots should be picked and only 5 leaves should be left. Fruit trees do not leave summer shoots, often to the orchard wipe shoots, wipe to the office before the end. 2. Fruit thinning method of pomelo: Fruit thinning is especially important for balanced growth of fruit, improvement of quality and yield. The fruit in the crown bore should be kept more, and 3~4 fruits can be kept on one fruiting mother branch; the fruit with higher crown should be kept in proper amount, and generally one fruit can be kept on one fruiting mother branch, up to 2, and the others should be thinned. 3. Summer pruning method of pomelo tree: Summer pruning refers to cutting off the long branches at the top of the crown, dense branches, dead branches and diseased branches in winter, and pruning in summer should be light. Reasonable pruning is especially important for adjusting tree growth, ventilation and light transmission, reducing pest damage, promoting fruit expansion and improving quality. Three, red pomelo pest control methods: 1, red spider control methods: The first peak occurred in May ~ June, and the high temperature occurred in July ~ August with few low peaks. Control: Pyridazinone 2000 times solution or Methomyl 2500 times solution in early May. In mid-June, 3000 times of Kemant solution. In mid July, 3200 times of Kemant liquid. 2, rust spider control methods: 5,6 and 7 key control periods. Control chemicals:80% manineb 500 times solution, pyridazinone 2000 times solution. 3. Control methods of scale insects: There are mainly: brown garden, arrow tip, pile wax powder, blowing cotton, etc. All kinds of scale insects should be controlled in the early and middle May, middle and late June, early and late July for the first generation and the second generation of nymph initial incubation period. Chemicals: Malathion 700 times solution, 20% amitraz 1000 times solution, speed kill 700 times solution (autumn use). 4, aphid control methods: Aphids are pests that harm young shoots in spring, summer and autumn. Control method:50% malathic acid 700 times solution, 80% dichlorvos 1000 times solution, spray once before each tender shoot 5 cm. 5. Control methods of leaf miner moth: The leaf miner is a major pest in nurseries and young trees. Control methods: young shoots from 0.5 cm, spray once every 5~7 days, a total of 3~4 times. It can be used to kill chrysanthemum resin 3000 times solution, Ke E Bao 1500~2000 times solution. 6. Control methods of Papilio: 5~6 generations a year, larvae eat the edge of young leaves at first, and eat up the whole leaves at large. Control methods:80% dichlorvos 1000 times solution, trichlorfon water 1000 times solution. 7. Control methods of bugs: The adults and nymph of the bug insert needle-like mouthparts into the fruit to suck the juice. Control method: Malathion 50% 700 times solution and trichlorfon 1000 times solution were used in nymph emergence period from May to June. 8. Control methods of scarab: Scarab occurs mostly in grapefruit orchards in mountainous areas, which is harmful to new trees. Control method: spray trichlorfon 1000 times solution, 80% dichlorvos 1000 times solution, malathion 700 times solution. 9, longicorn control methods: longicorn larvae eat bark, then turn to the xylem and roots, after September to the upper trunk. Method 1: Capture adults: After the first ten days of May, all kinds of longicorn adults come out of the hole one after another to harm, and mate and lay eggs. We should mobilize the masses to catch adults around the trunk at noon on a sunny day. There are still adults coming out of the hole before the big office. Method 2: Scrape eggs: After summer is the adult spawning period, we should often patrol the orchard, check the trunk below 30 cm from the ground, if there is spit-like glue secretion, it is the place where eggs are laid, use a knife to dig out and destroy eggs, use medicine to block and inject wormholes or kill larvae with hooks: often find wormholes in the trunk, clean up the insect dung in the hole, plug the hole with cotton ball of 10 times solution of dichlorvos, and then seal the hole with wet mud to kill the larvae. 4. Disease control methods of red flesh pomelo: 1. Control methods of ulcer disease: Canker disease affects branches, leaves and fruits. Control method:0.3%~0.5% double Bordeaux mixture, spray once 10, 25, 50 days after flower drop. Pay attention to wipe out summer and autumn shoots to eliminate latent leaf moths, young summer and autumn shoots before maturity spray streptomycin once. 2. Prevention and treatment methods of greasy spot disease: Greasy blotch affects fruit at late leaf stage. Control method: spray cuproammonium mixture, 80% manineb 500 times solution + jinggangmycin 500 times solution, once a month from May to July. 3. Control methods of anthrax: Anthracnose affects leaves, shoots, and fruit at inflated stage. Control method: spray 0.5% Bordeaux mixture in spring shoots, spray 500 times thiophanate-methyl solution in other periods. 4. Prevention and control methods of scab disease: Scab infests leaves, shoots and fruits. Control method: spring shoot tender leaf stage, young fruit stage control is more important, copper ammonium mixture, bordeaux mixture 0.5% times dosage formula. 5. Control methods of ring pattern disease: Damage to branches and fruits. Control method: spraying cuprum ammonium mixture and thiophanate-methyl 500 times solution on spring shoots about 0.5~3 cm long, spraying carbendazim 500 times solution + jinggangmycin 500 times solution on fruits, spraying twice in late April, middle May and early August respectively. Click for more grapefruit growing techniques Click for more fruit growing techniques