中文摘要：

围绕旱地农业生产中的水肥资源高效利用展开讨论,主要介绍了以3种典型化学调控制剂（土壤改良剂PAM、土壤保水剂SAP和蒸腾抑制剂FA）为代表的化学调控技术在旱地农业水肥资源利用方面的调控机制和应用方法,重点对化学调控技术在旱地农业生产中的增强水肥保蓄、提高坡地水土保持、改善作物水肥利用性能及提升作物品质和产量4个重要环节上的应用研究进行了综述,最后提出未来化学调控技术在旱地农业中应用的重点研究方向。

英文摘要：

The issue on the theme of efficient utilization of water and fertilizer in dry-land agriculture was discussed. The mechanism of action of three typical chemical agents （soil conditioner--PAM, water retaining agent--SAP, antitranspirant--FA ） in regulation of water and fertilizer and its application methods were introduced. Research of chemical regulating technology on four important parts were emphatically reviewed （ enhancement of the accumulation of water and fertilizer, improvement of the soil and water conservation, improvement of the utilization of crop to water and fertilizer, increasing of the crop yield and quality ） in dry-land agriculture production. Finally, the future important research directions were proposed.