LIN Wen-jie,MA Huan-cheng,ZHOU Jiao.Study on Water Dynamics of Different Hydrogel Treatments Under Drought Stress[J].Research of Soil and Water Conservation,2004,11(02):121-124.
干旱胁迫下不同保水剂处理的水分动态研究
- Title:
- Study on Water Dynamics of Different Hydrogel Treatments Under Drought Stress
- Keywords:
- hydrogel; Photinia serrulata; water content and potential; drought; dynamics
- 分类号:
- S152.7;S156.2
- 摘要:
- 在有限水分条件下，对盆栽石楠苗木的生长率和存活期、叶片和土壤水分水势动态变化进行研究。结果表明：（1）保水剂能提高土壤田间持水量10.8%～93.2%；（2）在停止供水后，有保水剂处理的土壤含水量、水势下降缓慢，保水剂用量越大，效果越好；（3）苗木叶片相对含水量、叶片水势下降延迟，苗木的生长受到抑制的时间延后，保水剂用量越大，效果越好；（4）保水剂处理延长苗木的生存期3.5～38.5d。
- Abstract:
- Under limited water condition,the study was carried out on survival time and growth efficiency of Photinia serrulata seedlings and dynamics of water content and water potential of soil and leaves in the pot experiment. The following results were obtained:(1)The hydrogel increased the full field water content by 10.8%~93.2%;(2)Water content and potential of soil with hydrogel reduced slowly and the effect increased with the increase of hydrogel content under no water supply condition;(3)Relative water content and water potential of leaves decreased slowly and the seedling growth was retarded later with the increase of hydrogel;(4)Seedlings survival time was prolonged by 3.5~38.5 d by the application of hydrogel.
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备注/Memo
收稿日期:2003-12-25。
基金项目:昆明市科技局计划项目、德国DEGUSS公司、国家科委推广项目
作者简介:林文杰（1972- ），男，湖南省洞口县人，西南林学院硕士生，从事植物生理生态学研究.