共 11 条
[5]
Conservation Tillage Systems. Unger P W. Advances in the soil Science . 1990
[6]
soil Surface Management in the Tropics for Intensive Land and Sustained Production. Lal R. Advances inthe Soil Science . 1985
[7]
Guidelines for predicating crop water requirements. Doorenbos J,Pruitt W O. FAO Irrigation and DrainagePaPer,Rome . 1990