Appropriate Surge Spring Root Irrigation Layout of Jujube on Mountain Land
ZHANG Lu-jun
WANG You-ke
XIN Xiao-gui
LI Hong-yan
Abstract：The field experiments about surge spring root irrigation layout of jujube were conducted ,the experimental trees were five-years old pear-jujube,the irrigation implements flow was 4 L/h、depth was 35 cm,irrigation norm was 80 L per tree,four treatments were included (T_1～T_4),1 ,2 ,3,and 4 irrigation implements per tree,respectively.The results showed: the soil wetting front of T_2 matched well with jujube roots,0～80 cm soil water content of T_2 keeping at a higher level.New branch length and leaves area of the four treatment jujubes were different after stop growing,the new branch length was ordered in T_2>T_3>T_1>T_4,leaves area was T_2=T_3>T_4>T_1.After physiological fruit abscission ,the fruits quantity of T_2 was 215 per tree,which was 57%,14% and 32% higher than T_1,T_3 and T_4,respectively; at the end of one irrigation cycle,the pre-dawn leaf potential(pdΨ_w) was between -1.0～ -1.4 MPa,pdΨ_w was ordered in T_2>T_4>T_3>T_1.In conclusion,the layout of 2 irrigation implements per tree was best to jujube growth,was a suitable surge spring root irrigation layout.
Keywords：jujubesurge spring root irrigationlayoutwetted solum
Publication Date：2010-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：5( 27-31 )