Analysis of Dry Matter Accumulation and Production Value of Flue-cured Tobacco by Continuous Cropping under Conventional Fertilization
The dry matter accumulation of root, stem and leaves and variation rules of production value of flue - cured tobacco variety Longjiang 911 were studied in the fields with different continuous cropping years under conventional fertilization. The results showed that the dry matter accumulation of root, stem and leaves increased with the process of growth and development, and reached the highest in the 17th week. But the dry matter accumulation decreased with the increase of continuous cropping years, and there were significant differences between the three continuous cropping treatments. Continuous cropping had the least effects on dry matter accumulation of lower leaves, while the largest on that of upper leaves. Continuous cropping could significantly decrease the production value of tobacco, which was more obvious with the increase of continuous cropping years. Comprehensive analysis results indicated that continuous cropping should not exceed five years.
Continuous croppingTobaccoDry matter accumulationProduction value
国家科技期刊平台
NSTL
万方数据
维普
