How to manage the fruiting period of Fuchuan navel orange

How to manage the fruiting period of Fuchuan navel orange? Please give guidance and introduction methods Fuchuan navel orange fruiting period management may refer to the following methods: 1, due to the tree topdressing stable fruit fertilizer and strengthening foliar spraying fertilizer, the initial fruiting tree consumes a lot of nutrition after budding and flowering, in order to improve the fruit, a fruit stabilizing fertilizer should be applied in time before the second physiological fruit drop (early June) and adhere to the principle of "fertilization due to trees". The method is as follows: ploughing and loosening the soil in the tree plate, opening a circular shallow trench at the dripping line, each plant is drenched with imported compound fertilizer 150ml 250g + mature manure 10Mel 15kg, and then cover the soil. During the growing period of young fruit, 0.3% potassium dihydrogen phosphate + 0.3% urea was sprayed on the leaves, once every 15 days. 2. Wiping out summer shoots and reasonable fruit thinning primary fruit trees have a large amount of summer shoots. In order to reduce shoot-fruit contradiction and increase fruit-setting rate, summer shoots were wiped out thoroughly from mid-May to late July, autumn shoots were uniformly released in early August, and fruit-bearing mother branches of the next year were cultivated. Before the second physiological fruit drop in early June, weak fruits, deformed fruits, pale fruits and disease and insect fruits are mainly removed. If there are too many fruits, some strong fruits should be removed. The ratio of leaf to fruit is 50 / 60. There are usually three kinds of navel yellow: physiological navel yellow, pathogenic navel yellow and pest navel yellow. Physiological umbilical yellow can be smeared with 92 ○ 200-300ppm or xanthate 800x solution, 10 Mel once every 15 days, 2 Mel 3 times. Pathogenic and pest navel yellow should be added to the above insecticides such as thiophanate (or carbendazim, carbendazim) and omethoate, and the mixed solution should be used to coat the navel, but the concentration of fungicides and pesticides should be 3 times higher than that of normal use. 4. Strengthening garden soil management, preventing fruit cracking tree plate mulching (covering weeds with a thickness of 10m / 15cm) and reasonable interplanting of legume green manure can effectively reduce soil temperature, keep soil moist, and significantly reduce fruit cracking caused by sudden water absorption and expansion after drought. In the young fruit stage, 0.3% potassium dihydrogen phosphate was sprayed on the leaves, once every 15 days. In the first ten days of July, the potash fertilizer was applied at a rate of 250ml 500g per plant. From the first ten days of June to the last ten days of July, the navel of young fruit was coated with 92 ○ 200-250ppm. If the fruit was found to be cracked, topirazine 800x solution should be added. During the fruit expansion period from July to August, the crown was sprayed with 0.5% urea + 0.2% potassium dihydrogen phosphate + 0.2% vinegar + 0.1% lime + 0.1% salt. 5. The prevention and control of rust wall lice and canker should be done well in summer to improve the appearance quality of fruit. Rust wall lice: in the young fruit period from late May to early June, spraying began when there were 5 insects on the fruit surface, sprayed once every 15 days, sprayed 3 times in a row, and sprayed twice from July to September. The medicament has 40% isocarbophos 1000 Mel 2000 fold solution, tin triphosphate 1500 Mel 2000 fold solution, propargite 3000 Mel 5000 fold solution, Dyson zinc 800 Mel 1000 fold solution. Prevention and treatment of canker, thoroughly erase summer shoots, cut off diseased branches and leaves. Focus on spray prevention and control after summer rain, you can choose 0.5: 0.5: 100 Bordeaux solution plus 2% washing powder, 77% can kill 600 rain 800 times liquid, fruit disease gram 1000 rain 1200 times liquid or add rice 600 rain 800 times liquid. . Click to get more navel orange planting techniques click to get more fruit planting techniques