Effect Of Ridge Height And Fertilization Methods On Tobacco-planting Soil, Yield And Quality Of Flue-cured Tobacco

In order to explore appropriate ridge height and fertilization methods Yanshan County tobacco area, with different ridge height, two factors of different fertilization field experiment was conducted to study the different treatments on soil temperature and moisture, root vigor and fresh and dry weight, tobacco growth, affecting the physical properties of cured tobacco, chemical components of cured tobacco, and other aspects of economic traits, the results showed:(1) The temperature and moisture content of soil. After transplanting, the growth of tobacco seedlings rely on water, fertilizer and temperature. The ridge soil body temperature mainly influenced by solar radiation. The lower height ridge, the smaller size of ridging body, the faster accumulating heat. The higher height of ridging body, the lower temperature of 10 cm depth in soil; And 20 cm soil layer relative to 10 cm slightly lower soil temperature, temperature rise has a certain lag ridging height is higher, the higher the soil water potential, soil moisture content decreased with increasing of ridging height, the moisture content of surface soil is low, the deeper the soil moisture content is higher; Fertilizing influence on soil temperature and moisture content.(2) The activity, fresh and dry weight of root. Rosette stage 20cm high ridge root fresh and dry weight of roots vigor is also larger,20cm high ridge second; vigorous growing and maturing,20,30cm ridge height greater root fresh and dry weight, root activity is also strong, 40cm high ridge smaller root fresh and dry weight, root activity is relatively weak; "101" Fertilization and cyclic with respect to single-layer strip fertilizing fertilizer increased fresh and dry weight of tobacco root, root dry single article Shi fresh weight and root activity are small.(3) The growth and development of tobacco. Rosette stage 20,30cm high ridge of tobacco plant height, leaf length and leaf width larger,40cm high ridge smaller; "101" Fertilization and cyclic with respect to single-layer strip fertilizing fertilizer increased strain of tobacco plant height, leaf length and leaf width. Wang long-term and maturity,30cm high ridge height, leaf length and leaf width larger,20cm high ridge followed.(4) The physical characteristics of tobacco leaves. After 30cm high ridge of the physical properties of tobacco leaves generally performed better,20cm, followed; the whole ring after fertilizing grilled tobacco leaf length and leaf width is large, "101", followed by fertilization.(5) Chemical components of tobacco leaves. After the roast lower leaves 20cm and 30cm high ridge ridging high total sugar and reducing sugar content or less, after the roast middle leaf total sugar and reducing sugar content expressed as 30cm ridge height> 20cm ridge height> 40cm high ridge, the overall performance "101" ring of fertilization and fertilizing of total sugar and reducing sugar content is high, and low single-banding of total sugar and reducing sugar content.(6) Economic traits of tobacco.20,40cm ridge high yields lower. Ridge height of 30cm each treatment in the upper tobacco ratio is larger, higher average.Evaluation,30cm ridge height combined with "101" or cyclic fertilizing fertilizer, tobacco grown in the field, after grilled leaf chemical traits and economic indicators Best.