Effects Of Fertilizer Synergist On Cake Fertilizer Nutrient Release And Flue-cured Tobacco Yield And Quality

Taking different fertilizer synergist and different application amount of cake fertilizer as factors, the field experiment was carried out, studied the changes of fertilizer synergists on soil nutrients on transplanting 30th day,60th day, and 90th day, and nutrients of sesame cake fertilizer changes with time, studied the effects of different treatments on the growth and development, physical characters, intrinsic chemical composition, economic characters of flue-cured tobacco leaves, the results showed that:1. Soil nutrients content. Transplanting 30,60, and 90 days, applying fertilizer synergist No.1 and DA-6 increased soil alkali-hydrolyzable nitrogen, rapidly-available phosphorus, and available potassium. Applying 40-50kg sesame cake fertilizer, the soil nutrients content were higher.2. The release of cake fertilizer with Fertilizer synergist. Fertilizer synergist promoted the release of cake fertilizer nutrient during 0-30 days, the performance of DA-6 is the best, No.1 fertilizer synergist is the second, Fertilizer synergist Wang is the third. During 30-70 days, he promoting effect gradually slow down, and DA-6 promoting the effect of nutrient release is becoming smaller and smaller.70-100 days, nutrient release gradually become stable.3. Flue-cured tobacco growth and development. Fertilizer synergist No.1 increased plant height, leaf length and width, but had little effect on the number of leaves, stem circumference; the larger Cake Fertilizer, leaf length, leaf width is greater. The obvious effects of fertilizer synergist on agronomic traits appeared at the rosette stage and vigorous growth stage, but not at the mature stage.4. The physical characteristics of flue-cured tobacco leaves. The lower leaves with A1B3 (No.1 fertilizer synergist+50kg cake fertilizer), middle leaves and upper leaves with A1B1 (No.1 fertilizer synergist+3Okg cake fertilizer) performance is excellent, fertilizer synergist increases the length, width and weight of cured tobacco leaves, and the more cake fertilizer, the physical indicators also has a good trend.5. Chlorophyll in tobacco leaf. Treatments of applying fertilizer synergist, the chlorophyll content of tobacco leaves increased with the cake fertilizer increased. The treatment which don’t applying fertilizer synergist showed that chlorophyll content of tobacco leaves with 40kg cake fertilizer is higher.6. Chemical components of flue-cured tobacco leaves. Each fertilizer synergist increased the chlorine content of upper leaves of flue cured tobacco, fertilizer synergist also increased the total nitrogen content of tobacco leaf. The potassium content of tobacco leaf increased with the cake fertilizer increased.7. The economic traits of flue-cured tobacco leaves. Treatment which applying fertilizer synergist could significantly increase the yield of tobacco leaves. The treatment which applying No.1 fertilizer synergist or DA-6, the yield is higher, The proportion of superior tobacco is also higher, the highest proportion of superior tobacco in A1B1, average price is the highest, and also has a better comprehensive performance.Comprehensive evaluation. Treatment A1B3 and A4B3(DA-6+50kg cake fertilizer) had a better performance on the agronomic traits and the physical characteristics of flue-cured tobacco. Treatment A1B1 had a better performance on chemical components.