Effect Of Plant Green Manure On Tobacco-Planting Soil And Growth,Development,Field And Quality Of Tobacco In Xiangxi

In 2014-2015, green manure field test and application test was studied in Xiangxi tobacco growing areas, effected of tobacco-planting soil and growth and yield and quality of flue-cured tobacco through different varieties of green manure, turn pressure different green manure fertilizer and different green manure return of green manuring amount of planting were investigated. The results show that:1. The effect of planting different varieties of green manure on soil nutrient, yield and quality of Flue-cured TobaccoThe agronomic traits was better of green manure treatment of Vicia sativa and milk vetch, no significant difference on agronomic traits of the difference treatment; it can improve the output value of tobacco after green manure treatment of soil, the output walue of tobacco increased greatly by Vicia sativa treatment, it has significant difference compared with CK, it was no significant difference of average price and the proportion of moderate smoke. The soil samples of green manure could effectively improve soil pH value, significantly increased the number of soil bacteria and nitrifying bacteria, can effectively improve the soil environment, improve soil fertility, can improve the content of reducing sugar, total sugar and K₂O content of tobacco, can improve the quality of tobacco, the Vicia sativa were the best green variety in all green manure varieties.2. The different fertilizing amount in soil of green manure pressuring effects on the yield and quality of Flue-cured TobaccoTobacco fertilizer reduced after green manure pressuring treated, it can delay the rosette stage and budding stage of tobacco; in the rosette stage, plant height, internode length, leaf number, maximum leaf size increased with fertilizer fertilization amount increased, The plant height, pitch, leaf number, maximum leaf size of tobacco were increased by tobacco fertilizer increased of plant growth period, tobacco growth increases, when the tobacco special fertilizer reaches 525kg/hm², the tobacco plants grew was similar to the control treatment; yield, output value, average price, the proportion of moderate smoke of control treatment was the highest, there was significant difference compared with the other fertilizer treatment.3. Effect of different amount of being green dressing soil to yield and quality of Flue-cured TobaccoThe squaring stage of 0 kg/hm²,7500 kg/hm² amount of being green dressing treatments was earlier two days than 15000 kg/hm²,22500 kg/hm² and 30000 kg/hm² treatments, no significant differences in other stages; there was no significant difference in agronomic traits at different growth stages; the yield and output value of 30000 kg/hm² treatment was the highest, it were 2458.8 kg/hm²,50053.8 yuan/hm² respectively, it was no significant difference to other treatments; the average price, proportion of moderate smoke of 7500 kg/hm² treatment was the highest than other treaments, it were 98.65%,20.48 yuan/kg respectively, there was significant difference compare with 30000 kg/hm² treatment, its intrinsic quality of the tobacco leaves was the best.Based on the above results, the 7500 kg/hm² amount of being green dressing has the best result, the 7500 kg/hm² treament with fertilizing amount of based fertilizer is suitable after planting green manure, the result on soil improvement is best with planting treen manure of Vicia sativa, suggest planting green manure with a large-scale promotion in Xiangxi.