【摘要】 本文通过对甘肃定西县鹿马岔流域综合治理的成绩及采用旱农生产力和生态适应性研究的初步结果,认为干旱少雨是影响生产力稳定性的主要因素,而土壤肥力不足则是限制生产力提高的根本原因。根据当地自然条件的特点和农业生态系统恶性循环的现状,从理论和实践上论述了“种草种树、发展畜牧”,实行农牧结合,对恢复生态平衡,培肥地力,提高水分生产率,发展旱农生产有着重要意义。更多还原

【Abstract】 Based on the success of the comprechensive treatment of Lumacha in Dingxi county of Gansu and the initial results of the study on the adaptation of dryland farming to the ecology, the authors consider that drought and little precipitation are the main reasons for unstability of crop yields, and the shortage of fertility is the basic reason for limiting productivity. In the light of thc characte rictics of the local natural conditions and the present situation of the ecological vicious circle, the authors emphasize the importance of "growing grass and planting trees and developing animal hus bandry", and combining farming with stock raising for the restoration of ecological balance, raising soil fertility, increasing moisture accumulation and developing dry land farming.更多还原