Effects of water stress and mulching on photosynthetic characteristics of carrotChinese Full Text
CHEN Jing-jing;WANG Xiao-wei;YANG De-long;College of Life Science and Technology,Gansu Agricultural University;Vegetable Research Institute,Gansu Academy of Agricultural Science;
Abstract: The effects of water stress and mulching on leaf gas exchange and chlorophyll content of carrot were studied under field condition using’cv.Xinxiusanhong’as the material.The results showed that the chlorophyll content decreased constantly as water stress prolonged,but increased first and then decreased as soil temperature increased.The content of chlorophyll was more sensitive than other parameters to soil temperature change.Net photosynthetic rate and stomatal conductance were significantly higher under clear plastic mulching than under black or no mulching.Enough soil moisture content benefited a higher photosynthetic rate of leaf in late stage of root enlargement.It was suggested that carrot cultivation with clear plastic mulching maintains soil temperature and moisture.Irrigation amount during root enlargement should be 325~450m3/hm2.
- DOI：
10.13432/j.cnki.jgsau.2014.03.010
- Series：
- Subject：
- Classification Code：
S631.2
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