华北农学报2016，Vol.31Issue(5)：140-145,6.DOI:10.7668/hbnxb.2016.05.021
干旱对大豆生理及产量影响的研究
Effects of Drought on Physiology and Yield of Soybean
摘要
Abstract
Tremendous impact of drought on agricultural production,research drought stress on physiological and yield,will provide the basis for soybean production in arid areas.In this paper,the use of plastic storage box drought stress test were studied photosynthetic physiology,leaf osmotic adjustment and antioxidant enzyme composi-tion and biomass yield on the soil water into arid(45% -55% of the maximum water holding capacity of soil field) two horizontal and humid (80% -1 00% field soil water holding capacity,CK).The results showed that drought stress soybean net photosynthetic rate,stomatal conductance and transpiration rate decreased significantly,water use efficiency increased;drought stress on leaf peroxidase(POD)and superoxide dismutase(SOD)no significant effect on the content;malondialdehyde(MDA)content increased by 25.00%to reach a significant level;the amount of re-ducing sugars and total soluble sugars increased by 47.09% and 47.1 6%,respectively.Drought stress on soybean plant height,node number,stem diameter,aboveground biomass,yield decreased significantly.Under drought stress, soybean stomatal conductance decreased significantly,severely affected the supply of CO2 ,reducing the net photo-synthetic rate,so that the decline in soybean photosynthetic metabolism.Plant material can be adjusted to maintain the moisture permeation through the cell.Although soybeans can maintain cell moisture through osmotic adjustment substances,drought still inhibits normal plant growth and decreases soybean biomass and yield.关键词
干旱/大豆/光合作用/抗氧化物酶/生物量/产量Key words
Drought/Soybean/Photosynthesis/Antioxidant enzymes/Biomass/Yield分类
农业科技引用本文复制引用
张仟雨,李萍,宗毓铮,董琦,尹美强,胡晓雪,郝兴宇..干旱对大豆生理及产量影响的研究[J].华北农学报,2016,31(5):140-145,6.基金项目
国家重点基础发展计划项目（“973”计划）（2012CB955904）；国家科技支撑计划项目（2013BAD11 B03-8）；现代农业产业技术体系建设专项经费（CARS-03-01-24）；农业部公益性行业专项（201303104）；山西省科技攻关项目 （）
