| Effect of different plastic mulching patterns on photosynthetic characteristics, yield, and water use efficiency of hybrid millet |
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| DOI：10.7606/j.issn.1000-7601.2014.06.026 |
| Key Words: hybrid millet plastic mulching physiological characteristics water use efficiency yield |
| Author Name | Affiliation | | JIANG Jing-wei1,2, DONG Bao-di2, SI Fu-yan2, WANG Xiao-ming3, ZHANG Qiu-ying2, SHI Chang-hai2, QIAO Yun-zhou2, LIU Yue-yan2, LI Quan-qi1, LIU Meng-yu2 | （1.山东农业大学水利土木工程学院， 山东 泰安 271018； 2.中国科学院遗传与发育生物学研究所农业资源研究中心, 河北省节水农业重点实验室,中国科学院农业水资源重点实验室， 河北 石家庄 050021； 3.张家口市农业科学院谷子研究所， 河北 张家口 075000） |
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| Abstract: |
| The experiment was conducted at Xuanhua Station of Zhangjiakou Academy of Agricultural Science(115°3′N, 40°63′E), with the aims of investigating the effect of different plastic mulching patterns on photosynthesis, grain yield, and water use efficiency in hybrid millet “Zhang 3”. Four treatments were performed, including flat planting and no mulching, full mulching and flat planting, no mulching and furrow seeding, and ridge mulching and furrow seeding. Compared with no mulching, the yield was increased by 13.25% and 6.64%, leaf water potential by 0.16 MPa and 0.09 MPa, photosynthetic rate by 10.87% and 15.69%, transpiration rate by 8.5% and 15.95%, stomatal conductance by 0.0092 and 0.0284 mol·m-2·s-1, and water use efficiency of leaf by 13.80% and 1.80% for plastic mulching in normal and furrow planting patterns, respectively. The results indicated that plastic mulching could improve the plant water status, as well as increase the leaf water potential and chlorophyll content, thus maintaining higher leaves physiological activity, increasing the water use efficiency, and achieving a significant higher grain yield. The promoting effect on yield in full mulching and normal planting patterns was better than those in the other three patterns. |
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