Effect of Drip-lines Space on Cotton Root and Plant Growing under Plastic Mulched Drip Irrigation
WANG Yun-xi
LI Ming-si
WEI Chuang
ZHANG Jun-ying
Abstract：The experiments were carried out under plastic mulched drip irrigation to study the effects of the space of drip-lines on the distribution of cotton root and plant growing.With the space of drip-lines of 130 cm and 90 cm respectively,the distribution of cotton root system,height of cotton stem,and cotton leaves area were observed in cotton growing stages.The experiments results indicated that a large space of drip-lines resulted in large irrigation and soil deep seepage; soil moisture was non-uniform horizontally and the cottons at inside and outside rows grew non-uniformly; cotton root was thin,the density of root length was single-peak-parabolic distribution in horizontal and was largest in 14～28 cm soil layer over the soil depth.While a little space of drip-lines resulted in uniform soil moisture as well as the cottons planting at inside and outside rows; cotton root was thick,the density of root length was double-peak-parabolic distribution in horizontal and was largest in 0～14 cm soil layer over the soil depth Nevertheless,the growing performances of the cotton root,plant and leaves under the different space of drip-lines were similar respectively.These efforts are helpful to select the percentage of wetted soil volume and the space of drip-lines in the design of drip irrigation technique.
Keywords：plastic mulched drip irrigationspace of drip-linescottondistribution of root systemroot length density
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：6( 68-73 )