水稻覆膜旱作对土壤环境及水稻生长的影响研究进展

Research progress of effects of ground cover rice production system with plastic film mulch on soil environment and rice growth

水稻覆膜旱作技术是通过覆膜旱作旱管来控制水稻根区土壤水分,充分利用降雨且辅以适时适量灌溉的技术。在前人研究的基础上,总结归纳了水稻覆膜旱作对土壤水热、土壤养分、温室气体排放及其生长的影响,分析了在不同地区覆膜旱作水稻产量变化,探讨了水稻覆膜旱作对提高水分利用效率的影响机理。提出覆膜旱作水稻水热传输过程、不同薄膜材料的优选及不同地区实现覆膜旱作水稻的增产是水稻覆膜旱作未来研究的重要内容及方向。

Plastic film mulching can control soil water content in the root zone under ground cover rice production system.With this system rainfall water can be fully used with the supplement of irrigations at appropriate amount and frequency.Based on previous research,the effects of plastic film mulching on soil water and heat,soil nutrients,greenhouse gas emission,and rice growth were summarized under ground cover rice production system in this paper.Moreover,the reasons of the yield change in different areas were analyzed and the mechanisms of water use efficiency enhancement were discussed.It is suggested that the water heat transfer process,the optimal selection of mulch materials,and the rice yield increase in different areas are the primary areas and directions for the future research on ground cover rice production with plastic film mulching.