Warm Winter Southern Grapes Hypnotic with Lime Nitrogen

Warm Winter Southern Grapes Hypnotic with Lime Nitrogen

Grapes are deciduous fruit trees and enter dormancy in winter and require a certain amount of low temperature. If the winter cold is insufficient, the bud body can not normally go through the dormancy period, which will cause the sprout to be slow and irregular, reduce the germination rate and the vine-bearing rate and other physiological obstacles, and the flowering quantity will reduce and affect the yield. However, the winter cold temperature in the south of China is generally insufficient and can not meet the needs of grape dormancy. In case of warm winter air, the temperature below 7.2°C is less, which will seriously affect the normal sprouting, flowering amount and yield of grapes. According to the research, the growth inhibitory substance in grape dormancy is ABA. ABA can be degraded at a temperature below 7.2°C, and the grape can reach the required low temperature. The winter bud dormancy problem can be solved. Lime nitrogen (including cyanogen) treatment results mother twigs, can promote the degradation of ABA, to a certain extent, can replace the biological effects of low temperature, so the lime nitrogen is called a breaker. For four consecutive years, the author used lime nitrogen (cyanogen) to coat the greenhouses and exposed grapes to achieve good results: the buds were neat, the budding period was 2-11 days ahead of time, and the dark green yield of the leaves increased. Lime nitrogen (cyanogen) use technology: 1 Concentration: Lime nitrogen 15-20%, that is, 5-7 times of water, the concentration of weak growing species should be lower, more than 20% can easily cause phytotoxicity, but inhibit germination. The cyanogenic acid is calculated as 1.5% according to the effective component. 2 Use period: The south should improve the germination rate and promote budding and neatness as the main purpose. The use period should be 20-35 days before germination. It should not be used prematurely, otherwise it will sprout prematurely and in case of late spring weather, it will increase the difficulty of preventing freezing injury and cold injury in early spring. It should not be used too late. 3 Method of use: Lime nitrogen shall be slowly poured into hot water above 70°C, stir immediately, container Stamped and soaked for 2 hours or more before use. Should not be soaked in cold water. Cyanide is a liquid and can be used after the water is used. Results One or two buds on the top of the mother shoots were not coated (apparent dominance), and the rest of the buds were painted together. Pay attention to the old vines should not be painted, the first year results tree does not use the results of the winter buds do not part of this branch; 5 painting sticks method: use a small brush, the liquid coating on the buds, while stirring while stirring the liquid, the black precipitate The objects are coated together on the resulting mother branch, and the overlying vines are clearly recognizable, avoiding recoating or leaking; 6 with the coating: the liquid can be applied after immersing for 2 hours, or soaked overnight for the next day. The long-term effect of ammonia volatilization: 7 weeks after the lime nitrogen coating in the greenhouse, if the branches are dry, spray the shoots once; 8 to prevent poisoning. Lime nitrogen black powder with stench and toxic. Masks and gloves should be worn during use to prevent powder from flying into the eyes and mouth to prevent liquids from sticking to the skin. If the skin is contaminated immediately wash with water: 9 Storage: In a cool dry place, generally will not degenerate.

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