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从水资源开发利用面临的问题、季节性干旱的多发性、旱作农业的重要地位3个方面论述了西南地区发展节水型农作制度的必要性,并提出了构建西南季节性干旱区节水型农作制度的基本思路.即①以多熟种植为特色的高效节水种植模式;②以保土保水为重点的保护性耕作技术;③以水资源高效利用为重点的节水灌溉与集雨补灌技术;④以农业资源合理开发为重点的立体农业技术;⑤以提高农作物抗旱性能为重点的化学抗旱保水技术.
This paper discusses the necessity of developing a water-saving farming system in Southwest China from the aspects of the problems of water resources development and utilization, the multiple occurrence of seasonal drought and the important status of dry farming. In addition, The basic idea of water-type farming system is: ①Efficient and water-saving planting mode featuring multi-cropping; ②Top conservation tillage technology focusing on soil conservation and water conservation; ③Water-saving irrigation with water resources efficient utilization as the key point Rainwater harvesting and irrigation technology; (4) three-dimensional agricultural technology focusing on the rational development of agricultural resources; (5) chemical drought-resistance and water-saving technology focusing on improving the drought resistance of crops.