Studies On The Purple Mudstone Of Tobacco Seedling Substrate

The flue-cured tobacco floating seedling matrix is the core technology, the materials and quality has a decisive effect on fertility of tobacco seedling quality and cost, matrix quality mainly depends on the matrix composition and ratio. The main raw material for floating seedling of peat, litter and other organic part of the materials, the formula of complex, poor chemical stability, high cost of production and transportation; peat are non renewable resources, a large number of long-term exploitation will inevitably cause unrecoverable damage to the ecological environment. In order to solve the problem of peat, floating seedling matrix material has been extended to the crushing mica, weathered stone, material sand body, purple sand shale, maturity wheat husk bagasse, corn stalk, peanut husk, weed, cinder, carbonized chaff, greatly expand the development space of floating seedling matrix, provides the material and technology. Support for sustainable development of floating seedling technology. But these technical achievements geographically limited popularization and application in different regions. Therefore, floating seedling technology of peat substitute resource research should be based on resource. Make full use of renewable raw materials, strengthening technology research, it has important realistic significance to the development of Flue-cured tobacco.With purple mudstone, perlite and organic materials to study the flue-cured tobacco floating seedling matrix peat substitute materials, study of feasibility, and feasibility of flue-cured tobacco seedling material suitable for formulation screening. According to the matrix material selected, different particle size and the ratio test and the related physical and chemical indices. To calculate the cost of seedling, seedling and seedling matrix substitute goods biological traits, agronomic and economic benefits. The results of the research are as follows:1, through statistical analysis on the practical floating production is carried out according to the following ratio matrix formula of seedling of orthogonal test design data: Purple mudstone particle size is less than 6mm; the 2 level,1 level of organic matter,1; expanded perlite as the 2 level,2; purple mudstone is 2 level,7.2, purple mudstone contains rich trace elements, organic matter content is very low, so the need to add the right amount of organic matter in the purple mudstone, in order to promote the normal growth of tobacco seedlings. Purple mudstone widely seedling sources, low price, good chemical stability, convenient transportation, by adding organic matter, perlite, as nursery substrate substitute, have great prospects for development.3, purple mudstone is a kind of material price is extremely cheap, convenient, low carbon consumption reclaimed, can cultivate the matrix material of high seedling stems robust, cost of 7.85 yuan per mu, only for the peat matrix 1/3 commodities cost. Technical operation and innovation management in accordance with GB/T25431.1-2010, the formation of "flue-cured tobacco floating seedling technology of purple mudstone standard" draft, also continue to carry out the optimization of purple mudstone ratio and component, forming technical specification for flue-cured tobacco floating seedling Pu’er purple mudstone mature...