The primary study of hurb residue and screw extrusion substituted medium in floating system of tobacco

Abstract

Abstract: Uses the hurb residue and screw extrusion completely substitutes the peat in the substrate formula，obtion 9medium.Via compared experiment of fomula breeding, the feasibility of peat substituted medium is studied in this paper. It is showed that, the floating system medium made by hurb residue and screw extrusion, but not peat can feasibly substitute the peat; The two substituted process, one materials proportion is coarse hurb residue60percentage, thin hurb residue20percentage plus perlite 20percentage,and the other is thin hurb residue60percentage, screw extrusion20percentage plus perlite 20percentage,of which breeding property is close to the cK. And this two medium can basely satisfy the requirements of eligible medium in floating system, the seedling which fostered by this king of medium can also meet the tobacco standard of strong seedling, but the seedling harmony of root between stem can not rearch cK, which require further continuous study to improve.

CLC Number:

S572

Wu tao,, Jin yan, Yang yu hong, Yang huan wen, Yang li-ping,. The primary study of hurb residue and screw extrusion substituted medium in floating system of tobacco[J]. Chinese Agricultural Science Bulletin, 2007, 23(1): 305-305.

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