植物的蒸腾,将叶中贮存的水分散失,又要从土壤中吸收水分补充。土壤水分不仅是植物的组成成分和吸收养分的媒介,而且是植物的重要生态因子。热带地区与温带地区由于大气条件不同,土壤水分含量与运动状况也不相同。由于不同植被需水和保水的能力不同,土壤水分状况又常受地面覆被所左右。植物的生长也受到环境水分条件的促进或抑制。 我省南部植胶区位于热带北缘,大部处西部型低纬度山地季风区,该区热坝周围的低山丘陵,已开发植胶。为了使胶树速生丰产,了解植胶区环境水分条件,并通过农业技术措施改善土壤水分状况,是很重要的。现仅就景洪地区的土壤水分资料作如下研讨。 Plant transpiration, the water stored in the leaves, but also from the soil to absorb water replenishment. Soil moisture is not only a component of plants and a nutrient-absorbing medium, but also an important ecological factor of plants. Due to the different atmospheric conditions in the tropical and temperate regions, the soil moisture content and movement are not the same. Due to different vegetation water and water retention capacity of different soil moisture conditions are often affected by the ground cover. Plant growth is also promoted or inhibited by environmental moisture conditions. The rubber planting area in the south of our province is located in the northern margin of the tropical region, mostly in the monsoon region of the western low-latitude mountainous region and the hilly area around the hot dam in this province. In order to make the plastic tree fast-growing and yielding, to understand the environmental conditions of plasticized rubber, and through agricultural technology measures to improve soil moisture status is very important. Now only Jinghong soil moisture data for the following discussion.