2, post-harvest drug sterilization and preservation of fresh fruit within 2 days after harvest, timely liquid dip fruit, available 70% thiophanate-methyl 1000 times or 500 times more than 500 times or 50% carbendazim 50% carbendazim any three added 200ppm2,4-D sodium salt, immersed for 2-3 seconds, the degree of soaking the whole fruit, picked up dry, 5-7 days after the package.
3, single fruit packaging with 0.01-0.02 mm thick, 3526 cm wide polyethylene film bag single fruit packaging, to reduce weight loss, keep the fruit fresh and full.
4. In the greenhouse, storehouses or houses with natural ventilation are selected for storage. The ground and walls can be sprayed with 4% bleaching solution or 70% thiophanate-methyl 500-fold diluted solution 7 to 10 days before pomelo is put into storage. The sulphur powder (10 g/m3 volume) was used to sterilise the closed doors and windows for 2 days, then ventilated and ventilated and dried for later use. After the warehouse floor is covered with planks or rows of bamboo mats, the fruit is layered on the top of the board. Generally, it can be stacked on 5 to 8 floors. It can also be loaded with dill baskets, piled up on the characters, and regularly checked in management to promptly remove rotting fruit. The weather and warehouse conditions are such as window ventilation, surface water spray, etc. to adjust the temperature and humidity of the warehouse.
Postharvest management of pomelo tree
1. Fruit trees bearing fruiting results of fruiting and harvesting, and each plant is sterilized with 50 kg of decomposed chicken manure or bran water fertilizer 15 days before fruit harvesting.
2. During winter pruning, the senescent shoots, cluster branches, cross branches, overlapping branches, etc. in the canopy are densely preserved, and the intensive cultivation results in the mother branch. Dead branches, pests and branches must be cut off. For the top of the vegetative branches, leggy branches have the purpose of sparse year-round, so that the results of the site as close as possible to the branches, in order to facilitate the flowering results.
3, top dressing outside the roots, leaves the winter after the fruit picking combined with the winter clear garden, you can spray 0.3% potassium dihydrogen phosphate or 800-1000 times green wang potassium, so that the harvest after the restoration of tree vigor, protect the green leaves for the winter.
4, prevention and control of red spiders, etc. According to the pest report, timely spraying control. Can be used 50% Torque WP 1500-2500 times or 73% Kete EC 2000-4000 times or 5% Nisugn EC 1000-2000 times and other spraying, pay attention to the foliage and leaf back II Face should be uniformly wet.
5. The tree trunk is painted white and the flowering agent such as Huaguoling is sprayed as the tree vigor. The fruit tree grows vigorously in the middle and late November to December. The “Huaguo Ling†flower-promoting agent is sprayed to promote nutrient accumulation and flower bud differentiation. .
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