Effects Of New Type Of Phosphate Fertilizer On Tobacco Planting Soil Nutrients And Growth And Chemical Composition Of Flue-Cured Tobacco

In order to study the effects of new type of phosphate fertilizer on Flue-cured Tobacco in Xiangxi region, the effects of different fertilizers on soil nutrient, tobacco growth and chemical composition were studied by field plot experiments in Fenghuang County, Yongshun County and Baojing County. Test results are as follows:1. After transplanting 90d, the available nitrogen, phosphorus and potassium content of the fertilizer treatment which provided mention seedling ammonium phosphate in Fenghuang County, Yongshun County and Baojing County were the lowest. The pH of Yongshun County soil which applied extraction ammonium phosphate fertilizer is closer to the high quality flue-cured tobacco. It showed that the treatment which applied extraction ammonium phosphate fertilize promoted the absorption of soil nutrients and improved the soil pH value of tobacco planting soil.2.In the whole growth period of flue-cured tobacco in Fenghuang County, Yongshun County and Baojing County, the total dry matter accumulation and dry matter accumulation in different organs were sustained growth, the growth rate is slow, then fast, and then slow, applied ammonium phosphate of tobacco seedling fertilization provided balanced nutrition, tobacco plant height, stem girth, the number of leaves, maximum leaf area, total dry matter accumulation, stem accumulation and leaf accumulation were highest. It showed that applied ammonium phosphate provided the growth of tobacco and increase the yield of Flue-cured tobacco.3. The content of total nitrogen and nicotine in Fenghuang County, Yongshun County and Baojing County were appropriate, the ratio of nitrogen and alkali ratio was 1. The contents of total sugar and reducing sugar were all higher than that of the high quality flue-cured tobacco,the content of chlorine were below 0.45%, the contents of potassium were about 2%, the ratio of potassium to chlorine was more than 4. The treatment of high phosphorus fertilizer applied to tobacco fertilizer and ammonium phosphate reduced the nicotine content of extraction of total nitrogen content in upper leaves and lower leaves, increased total nitrogen content in lower leaves and upper leaves of total sugar and reducing sugar content, increased the potassium content in tobacco, improved tobacco chemical coordination and burning. In a word, the fertilizer treatment which provided mention seedling ammonium phosphate works best.