Effect of Different Mulching Measure on Growth,Development, Yield and Quality of Flue-cured Tobacco
|School||Hunan Agricultural University|
|Keywords||flue-curd tobacco mulching cultivation technology growth yield andquality|
Plastic film mulching with straw mulch can reduce membrane in soil temperature, to overcome the single plastic film mulching and straw mulching soil temperature high temperature lower malpractice, conducive to the improvement of root zone soil environment, maintain and improve the vitality of root system, improve the quality of tobacco leaves.Plastic film and straw covering of soil and water conservation effect is better, can create a good water, fertilizer, gas, heat and other aspects of the superiority of ecological environment of soil.So, hand to relieve drought conditions in tobacco plant required water pressure, increase water use efficiency, conservation of water resources, on the other hand the flue-cured tobacco internal quality more coordination, improve tobacco industry usability, increasing economic benefit.This paper selected the current farmers often use several different covering methods, discusses this in several ways on flue-cured tobacco growth, soil temperature and moisture content of tobacco leaves, the main economic characters and main chemical composition of tobacco effects, to choose a kind of economical and practical method and improved soil. By using the routine method of cultivation, plastic film mulching, the rosette stage uncovering film, cover the rosette stage and straw, straw mulching plastic cover rear cover of the rosette stage Jie membrane fertilizer, straw mulch cover rear cover the whole growth period of the tectorial membrane in five ways:field experiment showed that straw mulch cover film after the rosette stage uncovering film covering treatment effect is best, can significantly improve the water content, yield and output value of the average than controls were increased15.4Kg/mu,312.72yuan/mu, tobacco leaf appearance and intrinsic quality is improved; plastic film mulching rosette stage uncovering film times; cover straw rosette stage and third; cover rear cover mulching straw in whole growth period of the tectorial membrane the worst; the conventional cultivation performance only to cover rear cover mulching straw in whole growth period of the tectorial membrane in treatment of.