Impact factors analyses of Zizyphus jujuba Mill. trunk on daily maximum shrinkage
Zhang Linlin, Wang Youke, Zhang Jun, Liu Shouyang, Han Lixin, Zhao Ying
(1.Soil and Water Conservation and Ecological Environment Research Center, CAS & MWR, 712100, Yangling, Shaanxi, China；
2.Graduate University of Chinese Academy of Science, 100049，Beijing, China;
3.College of Water Resources and Architectural Engineering, Northwest A&F University, 712100，Yangling, Shaanxi, China；
4.Yangling Vocational & Technical College,712100, Yangling, Shaanxi, China)
Abstract：To explore the relationship between Zizyphus jujuba Mill. trunk daily maximum shrinkage（DMDS） and meteorological factors under different soil water status, we performed an experiments with 4 year-old Zizyphus jujuba Mill. under four-level soil moisture treatments. The results demonstrated that：1) Soil water condition mainly had influence on the sensitivity of DMDS response to meteorological factors. The suitable water treatment was the most sensitive to meteorological factors, while other treatments presented similar dynamics and narrow fluctuation range. 2) DMDS showed varied relationship with meteorological factors over growth stages. The difference between DMDS and E、 V was very significant in fruit expansion and ripening stages, which was not significant during leaf expansion and flowing and fruit set stages. 3) The relationship between DMDS and meteorological factors were different under different water treatment during different growth stages. DMDS and V had significant relationship, DMDS and E had very significant relationship under higher water treatment, but others was not significant. 4) E was the key factor on influence trunk maximum daily shrinkage for Zizyphus jujuba Mill. which under different water conditions during all growth stages.
2013, Vol. 11 
