Key Technology Study On Fertilization Of Flue-cured Tobacco Production In Xintian

Fertilization is one of the key techniques of flue-cured tobacco cultivation. In the specific ecological conditions and variety, yield and quality of tobacco leaf height in largely depends on whether the reasonable fertilization. As the exploration in Hunan Xintian ecosystem, climate and soil conditions, the most suitable fertilization technology, carried out in different fertilization methods, different nitrogen and potassium fertilizer of Different Topdressing Stage test, the test results show that:1. Fertilization method:effect of different fertilizer application method on flue-cured tobacco growth period without obvious, significant impact on later growth of flue-cured, with double-layer fertilization treatment period advantages gradually rendered. On the economic characters, double-layer fertilization and "101" application method better than the dual side application method, double-layer application method best. Double-layer fertilization and "101" chemical ingredients of fertilization treatment is relatively more appropriate, coordination of various chemical constituents better by double fertilization process, bilateral fertilization treatment is poor. Three different methods of fertilization, comprehensive performance of double-layer fertilization treatment is best.2. Different nitrogen application:in 4 nitrogen levels, with mu N application amount increases, squaring stage and after the growth period has the tendency to postpone. The treatment of Agronomic Traits in the rosette stage to fertilization nitrogen 9.5kg and 11.5kg comprehensive performance is better, from growing into the dome, each index with the N application amount increases with the increase. With the application of N increased, the leaf yield increases, amount of N applied in 9.5kg-10.5kg, tobacco fold, classy smoke scale, the proportion of secondary smoke better performance, including mu amount of N applied in 9.5kg best performance. The chemical composition with mu amount of N applied in processing of 9.5kg relatively coordination. Comprehensive and, with Mu Shi N 9.5kg access to tobacco leaf quality and economic benefit of planting is relatively high.3. Different periods of topdressing potassium sulfate potassium sulfate test:different period dressing fertilizer on plant height and leaf number effect is not obvious, but for tobacco leaf area has bigger influence. In the rosette stage and bud stage dressing application is in the rosette stage or at squaring stage a topdressing, tobacco leaf to the area. In the rosette stage and bud stage the pHased dressing application processing in the fold and upper middle smoke scale better, at the same time, mu production value is the highest. Squaring stage topdressing potassium treatments and in the rosette stage and bud stage staging a potassium fertilizer treatment relatively suitable chemical composition, chemical composition of a coordination. In three different processing, improve the economic character and quality of tobacco leaf to potassium sulphate in the rosette stage and bud stage dressing application effect is best.