Long term effects of inorganic fertilizer inputs on crop productivity in a rice-wheat cropping system
作者： R.L. Yadav , D.S. Yadav , R.M. Singh , A. Kumar
关键词:
摘要: Three levels of N (40,80,120 kg ha-1) and P (0,17.5,35 ha-1), 2 K (0,33 were tested for 19 years in rice wheat crops a rice-wheat cropping system fixed layout 3×2×2 factorial partially confounded design along with one control 3 replications. From this trial, data 7 treatments, i.e. 0-0-0, 40-35-33, 80-35-33, 120-35-33, 120-0-0, 120-35-0 120-0-33 ha-1 N-P-K respectively compared yield trends, changes response functions, soil organic -C available N,P,K status. Soil - C decreased unfertilized plots by 62% (over initial value 0.45%) but increased 44, 40 36% receiving 80-35-33 respectively. Available was also greatest these same three treatments. about 5 fold 15 treatments supplied fertilizer P, no significant change detected without addition. Yields exhibited linear declining trend all The highest rate decline (89 year-1 175 wheat), however, found when 120 applied alone. least 20 58 observed 40-35-33 to both the crops. At currently recommended NPK (120-35-33 yields 25 62 wheat. Possible causes declines are discussed.
springer.com
sci-hub.se 参考文章(12)
Marion LeRoy Jackson, Soil Chemical Analysis ,(2014)
M.L. Morris, P.R. Hobbs, Meeting South Asia's future food requirements from rice-wheat cropping systems : priority issues facing researchers in the post-green revolution era CIMMYT. ,(1996)
J.C. Flinn, S.K. De Datta, Trends in irrigated-rice yields under intensive cropping at Philippine research stations Field Crops Research. ,vol. 9, pp. 1- 15 ,(1984) , 10.1016/0378-4290(84)90002-9
E. Liljeroth, E. Bååth, I. Mathiasson, T. Lundborg, Root exudation and rhizoplane bacterial abundance of barley (Hordeum vulgare L.) in relation to nitrogen fertilization and root growth Plant and Soil. ,vol. 127, pp. 81- 89 ,(1990) , 10.1007/BF00010839
P. B. S. HART, J. H. RAYNER, D. S. JENKINSON, Influence of pool substitution on the interpretation of fertilizer experiments with 15N European Journal of Soil Science. ,vol. 37, pp. 389- 403 ,(1986) , 10.1111/J.1365-2389.1986.TB00372.X
A. Dobermann, K. G. Cassman, P. C. Sta. Cruz, M. A. Adviento, M. F. Pampolino, Fertilizer inputs, nutrient balance, and soil nutrient-supplying power in intensive, irrigated rice systems. II: Effective soil K-supplying capacity Nutrient Cycling in Agroecosystems. ,vol. 46, pp. 11- 21 ,(1996) , 10.1007/BF00210220
D. S. Powlson, The Late G. Pruden, A. E. Johnston, D. S. Jenkinson, The nitrogen cycle in the Broadbalk Wheat Experiment: recovery and losses of 15N-labelled fertilizer applied in spring and inputs of nitrogen from the atmosphere The Journal of Agricultural Science. ,vol. 107, pp. 591- 609 ,(1986) , 10.1017/S0021859600069768
D.C. OLK, K.G. CASSMAN, E.W. RANDALL, P. KINCHESH, L.J. SANGER, J.M. ANDERSON, Changes in chemical properties of organic matter with intensified rice cropping in tropical lowland soil European Journal of Soil Science. ,vol. 47, pp. 293- 303 ,(1996) , 10.1111/J.1365-2389.1996.TB01403.X
S. Peng, F.V. Garcia, R.C. Laza, A.L. Sanico, R.M. Visperas, K.G. Cassman, INCREASED N-USE EFFICIENCY USING A CHLOROPHYLL METER ON HIGH-YIELDING IRRIGATED RICE Field Crops Research. ,vol. 47, pp. 243- 252 ,(1996) , 10.1016/0378-4290(96)00018-4
P. B. Barraclough, H. Kuhlmann, A. H. Weir, The Effects of Prolonged Drought and Nitrogen Fertilizer on Root and Shoot Growth and Water Uptake by Winter Wheat Journal of Agronomy and Crop Science. ,vol. 163, pp. 352- 360 ,(1989) , 10.1111/J.1439-037X.1989.TB00778.X