LIU Hong-bo.Study on the Rule of Hydraulic Resistance of Grape in SPAC System in Extreme Arid Region[J].Research of Soil and Water Conservation,2011,18(06):185-189.
极端干旱区葡萄SPAC系统水流阻力规律研究
- Title:
- Study on the Rule of Hydraulic Resistance of Grape in SPAC System in Extreme Arid Region
- 关键词:
- 葡萄; 土壤-植物-大气连续体; 水流阻力; 气孔阻力
- 分类号:
- S152.7
- 摘要:
- 在极端干旱条件下，以成龄无核白葡萄为研究材料，采用滴灌技术研究不同水分处理下气孔阻力连日变化及其与蒸腾速率、土壤水势、叶水势的关系，并分析水流阻力的分布及变化规律。结果表明：各水分处理在灌水后均随着时间的推移，蒸腾速率缓慢下降，其中高水处理的蒸腾速率最大，低水居中，中水最低，气孔阻力与蒸腾速率的变化趋势相反，表现为随灌水时间的延伸而增大；气孔阻力随着叶水势的减小而增大，呈显著负相关关系，且在高水与中水处理中，气孔阻力仅与20 cm土层以上土壤水势呈极显著相关，而低水处理气孔阻力与20-30 cm土层土壤水势呈极显著相关；在各水流阻力中，叶-气系统水流阻力最大，占该连续体中水流总阻力的98.8%~99.0%，植株体内水流传输阻力次之，占该连续体中水流总阻力的1.0%~1.2%。不同水分处理SPAC系统中的水流阻力变化规律一致，均为叶-气系统水流阻力最大，植株体内水流传输阻力次之，而土壤阻力最小，占该连续体中水流总阻力的比例小到可忽略不计。
- Abstract:
- The water distribution and variation of resistance, the stomatal resistance under different water treatments for a few days, and the relationship between stomatal resistance, soil water potential and leaf water potential were studied with the mature Thompson Seedless grapes as research material, with the drip irrigation technology in the extreme drought condition. The results showed that: the transpiration rate in each of the water treatments is getting slower over time after the irrigation. The transpiration rate of the high water treatment is the highest, the transpiration rate of low water treatment is in the middle, and lowest treatment has the lowest rate. The stomatal resistance performed the opposite trend compared with the transpiration rate, increasing as the irrigation time extends. The stomatal resistance is getting larger as the leaf water potential is getting smaller, showing the negative correlation. The stomatal resistance is only significantly related to soil water potential of 0-20 cm layer in high and middle water treatments, and related to soil water potential between 20 cm and 30 cm significantly in low water treatment. The flow resistance of leaf-air system is the largest in every flow resistances, taking up 98.8%~99.0% of the total flow resistances in this continuum, whereas the flow resistance in the plants ranks the second position, taking up 1.02% ~1.21%. The soil resistance is the smallest, takes the negligible proportion.
参考文献/References:
[1] 冷石林, 石培华.SPAC水流阻力的确定[J].中国农业气象, 1993, 14(6):43-46.
[2] 康绍忠.土壤-植物-大气连续体水分传输动力学及其应用[J].力学与实践, 1993, 15(1):11-19.
[3] 邵明安.根木质部水流阻力Poiseuille公式计算值与实测值的差别[J].水利学报, 1993(12):61-64.
[4] 康绍忠, 熊运章, 王振镒.土壤-植物-大气连续体水分运移力能关系的田间试验研究[J].水利学报, 1990(7):1-9.
[5] 景卫华, 贾忠华, 罗纨.总水势概念的定义、计算及应用条件[J].农业工程学报, 2008, 24(2):27-31.
[6] 郭庆荣, 张秉刚, 钟继洪, 等.南亚热带丘陵赤红壤-龙眼-大气连续体水分运移力能变化及分布规律[J].生态科学, 1993, 4(3):260-266.
[7] 康绍忠, 刘晓明, 熊运章.土壤-植物-大气连续体水分传输理论及其应用[M].北京:水力电力出版社, 1994.
[8] 张喜英, 刘孟雨, 雷玉平.土壤-植物-大气连续体水分运移阻力的田问试验与模拟研究[J].中国农业气象, 1995, 16(2):33-36.
[9] 徐军亮, 马履一, 王华田.油松人工林SPAC水势梯度的时空变异[J].北京林业大学学报, 2003, 25(5):1-5.
[10] 杨晓光.夏玉米农田SPAC系统水分传输势能及其变化规律研究[J].中国生态农业学报, 2003, 11(1):27-29.
[11] 康绍忠, 刘晓明.玉米生育期土壤-植物-大气连续体水流阻力与水势的分布[J].应用生态学报, 1993, 4(3):260-266.
[12] 张斌, 丁献文, 张桃林, 等.干旱季节不同耕作制度下红壤-作物-大气连续体水流阻力变化规律[J].土壤学报, 2001, 38(1):17-24.
[13] Van den Honert T H. Water transport in plants as a catenary process[J].Discusions of the Favaday Soc., 1948, 3:146-153.
[14] Cowan I R.Transport of water in the soil-P1ant-atmosphere system[J].J. Apply Ecology, 1965, 2:221-239.
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备注/Memo
收稿日期:2011-5-5;改回日期:2011-6-12。
基金项目:国家科技支撑计划(2011BAD29B05);新疆自治区科技攻关项目(200931105);水利部公益性行业科研专项(201001066)
作者简介:刘洪波(1982- )，男，湖北天门人，硕士生，主要从事水分高效利用研究。E-mail：lhb090@163.com
通讯作者:白云岗(1974- )，男，新疆奇台人，高级工程师，主要从事农业水土工程方面的研究及技术推广工作。E-mail：xjbaiyg@yahoo.co