摘要
通过在新疆南疆田间试验,利用SF-G液流传感器和CIRAS-3便携式光合作用仪研究滴灌核桃树茎流速率变化规律及其与光合参数间的关系。结果表明:茎流速率的日变化在晴天条件下呈双峰曲线,峰值在13∶30与17∶30左右达到,多云天气条件下茎流速率的日变化呈多峰曲线;核桃树茎流速率与太阳辐射和大气温度具有显著性正相关,与大气相对湿度呈显著性负相关;核桃树茎流速率变化与光和参数Gs、Tleaf、WUE呈极显著性正相关,与RH、Ci呈极显著性负相关,与Pn、Tr显著性相关。
SF-G fluid flow sensors and CIRAS-3 portable photosynthesis instrument are used to analyze the change law of stem-flux and pho- tosynthetic parameters in walnut trees by drip irrigation in South Xinjiang. The results show that the diurnal variation curve of stem-flux demonstrated two peaks on a clear day, which reached the peak at about 13 ： 30 and 17 ： 30, while it showed a multiple peak curve in an overcast daytime. Stem-flux was positive correlated with solar radiation and atmospheric temperature, and was negative correlated with atmospheric humidity. There was a significant positive correlation between photosynthetic parameters and Gs, Tleaf, WUE. Photosynthetic parameters were negatively related to RH and Ci, and significantly correlated to Pn and Tr.
作者
赵付勇
赵经华
马英杰
洪明
付秋萍
ZHAO Fu-yong ZHAO Jing-hua Ma Ying-jie HONG Ming FU Qiu-ping(College of Water Conservancy and Civil Engineering, Xinjiang Agricultural University, Urumqi 830052, Chin)
出处
《中国农村水利水电》
北大核心
2017年第3期31-34,40,共5页
China Rural Water and Hydropower
基金
新疆维吾尔自治区重大专项(201130103-1)
国家科技支撑计划项目(2011Bad29B05)
新疆水利科技项(2013G05)
新疆水利水电工程重点学科基金资助项目(XJZDXK-2002-10-05)
关键词
茎流速率
光合作用
核桃树
气象因子
stem flow rate
photosynthesis
walnut trees
meteorological factors
