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 Posted: Sat 10:52, 29 Jan 2011 Post subject: Tobacco Zn application rate effects and the determ |
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Tobacco Zn application rate effects and the determination of economic rationality
Effect of zinc level equation, the pilot study the effects of tobacco and a reasonable application of zinc fertilizer effect of zinc for further economic analysis. Volume. Now report the results as follows. Second, the results and analysis I. Materials and Methods (a) tobacco Zn effect (a) of the soils: Test in 1993 - 1995 in the test results showed that: Zn in flue-cured tobacco that has a significant Xifeng Shi for three years, test to the main soil types to cover the increase in production of black, raise the proportion of fine tobacco products and the average price,[link widoczny dla zalogowanych], and loam. The soil was determined by conventional analysis. Value effect. Shi zinc than non-rotation fertilizer, increased yield per mu (b) of the tested crops: tobacco (variety: NC89). 10.05-14.29, increase the ratio of 7.58 on a medium smoke (c) test programs and design: testing a total of five at 9.83 percent. 15.40-26.4 per mu is increased by reason: �� Z ~ 0kg / mu, �� z. o. 1kg / mu, �� z. o. 2kg / yuan / mu, the difference was very significant level. Acres, �� z. o. 3kg / mu. �� 0.4kg / acre. The following residential area of value-added zinc effects on economic analysis. 40m:, arranged in randomized blocks, repeated 3 times. Test with Zn under three years of test data, regarded as the output value of flue-cured tobacco with Z23 of zinc sulfate, dosage according to the treatments at the same time - Effect of zinc level effect equation: Mushi ammonium nitrate 8kg, SSP 50kg,[link widoczny dla zalogowanych], potassium V: 415.34 +�� 87.23x a 331.87x10kg. NPK fertilizer was applied as a basal fertilizer, zinc 70 as tR: 0.9873 a) basal, 30 in tobacco flourishing, flowering spraying. Fertilizer press. 26. Gansu Rural Technology 1996.3 tobacco and its economic multiplier effect of zinc sheet Note: According to the effects of tobacco zinc equation. Fertilizer costs are not included in fixed costs. zI 'every kg6 yuan. The table shows that with the increase in the amount of zinc, when the marginal profit is 0, that is to achieve economic optimum fertilizer point, Shi capacity 0.28kg / acre, then the output value of 441.75 yuan / mu, more than this point the profit margin becomes negative. (B) Effect of zinc a reasonable amount of tobacco economy to determine the economic rationality of crop fertilizer, the economic optimum fertilization using a ceiling, the maximum margin of fertilizer as the lower limit, and according to different profit margins (R) values to determine. Under field test conditions in general,[link widoczny dla zalogowanych], difficult to detect the sensitivity of testing differences among treatments at 5 the following significant. If the economy when the value of the best fertilizer for the Ymax �� e,[link widoczny dla zalogowanych], economical range of fertilizer output value to be attained by Ye, when Ymax �� e no significant difference between the number of D,[link widoczny dla zalogowanych], namely D-5 ~ Ymax �� e, then only to meet the range: Ye> (Ymax �� e - D). Ye substituted into the equation the effect of fertilizer can be reasonably obtained the lower limit of the economy. We use this method to determine the amount of flue-cured zinc application scope of economic rationality. Effect of zinc level of flue-cured tobacco production value of the effect of the equation: Y a 415.34 + l87.23x an 331.87x for Ymax �� e a 441.75 yuan / mu (0.28kg / mu), Tony 0D a 5% x441. 75-22.09 (yuan / mu). Ye a 441.75-22.09-419.66 (yuan / mu). Therefore: 4�� 5.34 +187.23 X a 331.87X a 419.66. Above equations have solutions. Xl a 0.02. X2-0.54, by x2 is greater than the economic optimum fertilization, fertilization unreasonable point, so make sure the economic rationality of flue-cured tobacco range of applied zinc: Z0.02-0.28kg / acre, then the output value of more than 419 .66 yuan / mu. Third, the summary (a) under the experimental conditions, tobacco use has significant value-added zinc effects, Effect of zinc than the control value 15.40-26.41 yuan / mu. (Ii) the added value of applying zinc fertilizer flue-cured tobacco were economic analysis. The maximum value of flue-cured tobacco, which is the best value to 441.75 yuan of economic / acre, this time Mushi Z. O. 28kg. The highest fertilizer per acre profit of 24.73 yuan. (C) To ensure access to both high-value, but also achieve a better economic efficiency, it is recommended to Ye (a Ymax �� e-D) as the target output value to obtain a reasonable economic limit fertilization. Click methods to determine the amount of tobacco economical range of applied zinc: Z. 0.02-0.28kg / acre, then the output value of more than 419.66 yuan / mu. The amount of specific facilities should be determined depending on soil fertility. (Editor Peter Lin) in rural areas of Gansu Science and Technology 1996.3.27 *
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