Method for preparing flue-cured tobacco float breeding matrix by using wheat straws and flue-cured tobacco float breeding nutrient solution

Abstract

The invention discloses a method for preparing a flue-cured tobacco float breeding matrix by using wheat straws and a flue-cured tobacco float breeding nutrient solution. The method comprises the following steps of: pre-treating the wheat straws, and performing mixed piling-up fermentation treatment on the pre-treated wheat straws and pig manure, or chicken manure, lime, soil and the like so as to prepare the flue-cured tobacco breeding matrix, wherein the raw materials replace non-renewable peat, so the effects of low cost, high quality and sources; the piling-up fermentation temperature is over 60 DEG C, and the piling-up fermentation can last for more than 15 days, so that pathogenic bacteria can be killed effectively, and the disease and pest spreading can be prevented; the obtained breeding matrix is loose and porous, beneficial to growth of root systems of tobacco seedlings and high in water and fertilizer keeping capacity; the nutrient solution matched with the flue-cured tobacco float breeding matrix is complete in nutrition, and reasonable in ratio, saves fertilizers, and reduces the cost; growth conditions and agricultural indexes of the tobacco seedlings bred by using the matrix and the nutrient solution disclosed by the invention are equal to those of tobacco seedlings bred by using a peat matrix.

Description

technical field [0001] The invention relates to the technical field of soilless cultivation, in particular to a method and a nutrient solution for preparing a flue-cured tobacco floating seedling-raising substrate by using wheat straw. Background technique [0002] Flue-cured tobacco is one of the important economic crops in my country, widely planted in Yunnan, Guizhou, Sichuan, Chongqing and other southwestern regions. In the production of flue-cured tobacco, cultivating strong seedlings is one of the important links in the production of flue-cured tobacco, and it is also an important measure to improve the yield and quality of flue-cured tobacco. At present, floating seedling cultivation is the main method of flue-cured tobacco seedling cultivation, accounting for about 85% of tobacco seedling production. Peat is the main component of the floating nursery substrate. However, peat mining costs are high, environmental pollution is heavy, and peat resources are limited. I...

AI Technical Summary

Problems solved by technology

However, the current nutrient solution used for floating seedling cultivation of flue-cured tobacco does not consider the different needs of tobacco seedlings for nutrients in different periods, and all use nutrient solutions with fixed components and concentrations, which cannot meet the physiological needs of tobacco seedlings for nutrients

At present, there is no research report on the nutrient solution for floating seedlings of flue-cured tobacco in different stages