Application of Boron Fertilizer to Chestnut
According to the investigation, Chinese millet has 15% empty buds in normal growing areas, and some are even as high as 50%, which seriously affected the growth of Chinese chestnut. The lack of boron is the main reason for the empty bud of Chinese chestnut. The application of boron fertilizer could obviously inhibit the formation of empty bud and increase the yield of Chinese chestnut. In spring, chestnut is applied in annular ditch or hole before sprouting. Borax was applied to the area with dense fibrous roots around the crown, and then covered with soil and watered with 0.1-0.15 kg per plant. In the same year, the empty bract rate of plate millet can be reduced to less than 4%, and the trees with empty bract rate of more than 50% can be reduced to less than 5% every year within 4 years after application. It can be seen that the application of boron fertilizer can meet the boron needs of Chinese chestnut for many years, reduce the empty bract rate and increase the yield.
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How to control diseases and insect pests of Chinese chestnut
Chestnut in Anhui Province is mainly distributed in the mountainous areas of southeastern and western Anhui, and the Jianghuai hilly area has also developed on a large scale since the 1990s. The main chestnut counties (cities) are Jinzhai, Huoshan, Shucheng, Yuexi, Guangde, Ningguo, Taihu Lake and so on. There are more than 150 kinds of diseases and insect pests that harm Chinese chestnut in our province.
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Closely planted chestnut shaping and pruning
Selection of superior seed scion: select excellent chestnut varieties with good local performance, and select strong fruiting branches with full growth and development, full apical buds and no diseases and insect pests, with a general length of 7-8 cm and 3-4 buds. The scion should be picked and picked now, or collected in advance and stored at low temperature after wax sealing. Grafting period: one.
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