Method for producing tobacco floated seedling raising matrix

Abstract

The invention discloses a method for producing a tobacco floated seedling raising matrix. The seedling raising matrix is prepared by mixing fungus bar powder and sand grains. The method is characterized by comprising the following steps of: crushing edible fungus bars into powder, stacking the powder, fermenting naturally at the temperature of over 20 DEG C, and sterilizing by a disinfectant; mixing and stirring the edible fungus powder and the sand grains uniformly in a weight ratio of 5:7, and loading the mixture into a seedling raising floating plate; and sowing 1 to 2 grains of tobacco seeds in each hole in the seedling raising floating plate, covering a seedling raising matrix material with the thickness of 2 millimeters, and putting the seedling raising floating plate into a seedling raising pond of a seedling raising shed to perform seedling raising.

Description

technical field [0001] The invention relates to a soilless cultivation technique for crops, in particular to a method for producing a substrate for floating seedlings of tobacco. Background technique [0002] At present, the known substrate for floating seedlings of tobacco is mixed with peat, vermiculite, expanded perlite, etc., and the ratio is 60% to 70% (v / v) of peat, and 15% to 20% of vermiculite and expanded perlite. %(v / v). This kind of substrate has good physical and chemical properties, and the gaps in the substrate can exchange gas to provide oxygen for root respiration, and can provide suitable water and nutrients for the growth and development of tobacco seedlings. However, the production cost of this kind of matrix is ​​high, especially the main raw material of this kind of matrix - peat, which comes from plateau wetlands, has limited reserves and is a non-renewable resource. Large-scale mining for many years will cause irreversible damage to the ecological bal...

AI Technical Summary

Problems solved by technology

However, the production cost of this kind of matrix is ​​high, especially the main raw material of this kind of matrix - peat, which comes from plateau wetlands, has limited reserves and is a non-renewable resource. Large-scale mining for many years will cause irreversible damage to the ecological balance of wetlands.

Many studies have been carried out on the substitute materials of the substrate, such as using decomposed wheat bran, carbonized chaff, bagasse, corn stalks, peanut bran, weeds, cinder, crushed mica and other substances as substitute substrates. The cost is low, but decomposed wheat bran, carbonized chaff, bagasse, corn stalks, peanut bran, weeds and other materials are used as the matrix physical properties such as particle size, bulk density, total porosity, water holding porosity, air porosity, air porosity Poor degree / water holding porosity; coal cinder, crushed mica and other materials used as matrix chemical properties such as electrical conductivity, cation exchange capacity (CEC) are poor, and cannot replace the existing matrix