Cold-humid adversity resisting tobacco coated seed and preparation method thereof

Abstract

The invention discloses a cold-humid adversity resisting tobacco coated seed and a preparation method thereof. Before being subjected to coating and pelleting, the tobacco seed is initiated by using mixed solution consisting of 5 to 10g / L urea hydrogen peroxide and 50 to 100mg / L gibberellin; and when coating and pelleting is performed, 10.0 to 20.0 percent calcium peroxide is added into a seed coating agent. The cold-humid adversity resisting tobacco coated seed prepared by the invention has the advantages of high seed activity, short sprouting time, high rate of emergence in the fame, uniform emergence of seedlings, high resistance to low temperature stress and hyproxia stress, and the like, and has excellent application prospect in the tobacco production.

Description

technical field [0001] The invention belongs to the technical field of tobacco seed coating processing, and in particular relates to a cold-humid stress-resistant tobacco coated seed which is especially suitable for a cold-humid seedling raising environment. At the same time, the invention also relates to a preparation method of the cold-humid stress-resistant tobacco coated seeds. Background technique [0002] Tobacco floating seedling cultivation is an advanced seedling raising technology in tobacco leaf production. It has high production efficiency and neat growth of tobacco seedlings, which is suitable for specialized and large-scale production of tobacco leaves. Since 1996, along with the rapid development of tobacco leaf production in my country, the floating seedling raising technology of tobacco has been popularized very rapidly in tobacco leaf production. [0003] To facilitate sowing, tobacco-coated seeds are generally used in tobacco leaf production. Early tobac...

AI Technical Summary

Problems solved by technology

Early tobacco-coated seeds were mainly developed and produced for conventional seedling-raising techniques. With the renewal and transformation of seedling-raising methods, conventional tobacco-coated seeds can no longer meet the needs of modern tobacco agricultural production.

First of all, the temperature is low during seedling cultivation in most tobacco areas in my country, and severe weather such as rain, snow and freezing is often encountered, resulting in low water temperature in the nursery pond, and even freezing of the water in the nursery pond, which reduces the germination rate of the coated seeds and slows down the emergence of seedlings. The emergence of seedlings is irregular, the growth is weak, or even no seedlings, which seriously affects the normal tobacco leaf production and brings huge economic losses to the country and tobacco farmers

Secondly, the healthy germination of tobacco seeds and the growth of seedlings require sufficient oxygen. Since the seedlings are raised in a floating way, the seedling substrate is full of water and has poor air permeability. Soaking the coated seeds in open water for a long time will affect the germination of the seeds and the growth of the seedlings. Low oxygen stress affects the improvement of floating seedling quality

[0004] Conventional tobacco coated seeds have low resistance to the cold and wet adversity stress often encountered in floating seedlings, and it is difficult to meet the technical quality requirements of floating seedlings for tobacco seeds, which restricts the rapid development of tobacco leaf production