Management of expanding period of planting Chinese Chestnut
Timely fertilization in summer and autumn, the roots were fertilized once a month, mainly nitrogen, phosphorus and potassium. For trees with a yield of more than 50 kg, urea 0.75 kg, potassium dihydrogen phosphate 0.5 kg, potassium dihydrogen phosphate 0.5 kg, nitrogen, phosphorus and potassium compound fertilizer 1 kg, 1.5 kg, sprinkled or 100 kg of clear water were applied after rain.
Cover the tree plate in summer and autumn, cover the tree plate with dry straw or other weeds with a thickness of 8 cm to 10 cm, in order to reduce water loss, keep the soil moist, prevent high temperature and drought weather from harming the underground roots, and improve the root absorption capacity.
The fruit of Castanea mollissima is easily damaged by anthracnose, powdery mildew, dry blight, chestnut moth, chestnut gall wasp, chestnut weevil and so on during the expansion period of chestnut fruit, resulting in a large number of rotten fruit and fruit drop. For this reason, the mixture of 1000 folisbene and 800x methyl topiramate should be sprayed inside and outside the crown once a month, or 1000 times dichlorvos and 600x carbendazim.
Foliar topdressing during the expansion period of chestnut fruit, 0.1% magnesium sulfate, 0.2% urea, 0.3% potassium dihydrogen phosphate, 1500 times Shennong chelate fertilizer mixture, or 800x fruit tree special type Gaomei organic humic acid active liquid fertilizer solution was sprayed every 10 to 15 days, in order to improve the nutritional level of the tree, promote the rapid expansion of the fruit, make the flesh full, and avoid the occurrence of empty buds.
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Postharvest Management of Castanea mollissima trees growing Chestnut
Chestnut trees begin flower bud differentiation before fruit picking, and there is a great lack of nutrition after fruit picking. Whether the management of autumn and winter can be strengthened in time is related to the quality of flower bud differentiation and has a great impact on the yield in the coming year. First, fertilize reasonably and give enough food. Generally, every 100 kilograms
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"two methods" of grafting for planting Chinese Chestnut
Now the abdominal grafting method and splicing method are introduced as follows: abdominal grafting is a grafting method with no cross-section in autumn. This method can be used for height grafting of seedlings and big trees. The specific methods are as follows: 1. Open the anvil. Gently cut down on the straight side of the rootstock about 7 cm from the ground, 3 cm long
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