Aeration treating method of tobacco floating seedling

Abstract

The invention discloses an aeration treating method of tobacco floating seedling. The aeration treating method comprises the following steps of: before seeding and panning, mixing calcium peroxide with matrix according to the using amount of 150.0 to 450.0g / m<3> evenly, adding the calcium peroxide with the concentration of 0.09 to 0.27g / L into pond culture solution when the second true leaf and the sixth true leaf respectively grow out of the tobacco seedling, and other operations are respectively conventional technique. The aeration treating method can solve the hypoxic stress of floating seedling to tobacco seedling, improve the environment for the sprouting of tobacco seeds and growing of the root system of the tobacco seedling, improve the uniformity of seedling emergence, strengthen the activity of the root system of the tobacco seedling, enhance the growth of the tobacco seedling, improve the quality of the tobacco seedling, and is beneficial to culturing disease-free strong tobacco seedlings. The tobacco seedling cultured by adopting the method has the advantages of short seedling emergence time, high transplanting survival rate, strong field growth potential and the like. The invention has simple and convenient operation, low cost and good application prospect.

Description

technical field [0001] The invention belongs to the technical field of tobacco seedling cultivation, and in particular relates to an aeration treatment method for floating tobacco seedling cultivation. Background technique [0002] Tobacco floating seedling cultivation is an advanced method of raising seedlings. It has high production efficiency, neat growth of tobacco seedlings, and can effectively avoid the occurrence of soil-borne diseases, insects, and weeds. It has laid a good foundation for cultivating disease-free and strong seedlings, and promoted It has improved the scale, intensification and standardization of tobacco seedling cultivation. The United States, Brazil and other countries are vigorously promoting this new technology. Since our country began to promote the technology of floating seedlings on tobacco in 1996, the technology has developed rapidly. In 2006, the popularization rate of floating seedlings in the country has reached more than 70%. At present...

AI Technical Summary

Problems solved by technology

[0003] Since the substrate of floating seedlings is full of water, after sowing, the seeds are soaked in open water for a long time, which is easy to form hypoxic stress, so that the seeds cannot get enough oxygen for germination

In the process of floating seedling cultivation, due to the underdeveloped aeration tissue inside the tobacco root system, and part of the root system grows in the nutrient solution for a long time, the pool surface is covered by the seedling tray, and the contact surface between the liquid surface and the air is small. The high oxygen demand leads to insufficient oxygen supply to the root system, which inhibits the differentiation of root cells, weakens the absorption function of the root system, and reduces the vitality of the root system (China Tobacco Science, 2002, (1): 12-13), which leads to the failure of floating seedlings. Tobacco seeds take a long time to germinate, poor uniformity of seedling emergence, few root systems of tobacco seedlings, low vigor, and weak growth potential of tobacco seedlings, which inhibit the growth and development of tobacco seedlings and the improvement of seedling quality

Images