Effects of Regulated Deficit Drip Irrigation on Growth and Yield of Sugar Beet
FENG Zeyang
LI Guolong
LI Zhi
ZHANG Yongfeng
ZHANG Shaoying
Abstract：We present the results of a field experiment aimed to elucidate the effects of regulated deficit drip irri-gation on growth traits, yield and water use efficiency of sugar beet. The results showed that over the vegetative developmental period, a moderate water deficiency by keeping soil moisture content at 50%~60%of the field capacity had a compensatory effect on leaf area, dry root weight, net photosynthetic rate and transpiration rate af-ter re-wetting, whilea severe water deficiency with soil moisture being 40%~50%of the field capacity had an inhibitory effect on the growth of the plant. It was also found that a deficit irrigation during the root swelling pe-riod had less effects on growth and physiological development of the plant than that during the vegetative devel-opmental period. Considering the yield and water use efficiency, it was concluded that an irrigation amount of 1147.78 m3/hm2 over the vegetative development stage and another 635.54 m3/hm2 over the root swelling stage are optimal for deficit irrigation.
Keywords：drip irrigationregulated deficit irrigationsugar beetwater use efficiencyyield
Publication Date：2017-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：6( 7-12 )