| 不同覆盖模式对玉米叶片水分利用效率的影响 |
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| 引用本文： | 赵丽,邓妍,郭虹霞,张丽光,秦丽霞,王陆军,王创云.不同覆盖模式对玉米叶片水分利用效率的影响[J].玉米科学,2022,30(2):132-138,144. |
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| 作者姓名： | 赵丽 邓妍 郭虹霞 张丽光 秦丽霞 王陆军 王创云 |
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| 作者单位： | 山西农业大学农学院, 太原 030031 |
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| 基金项目： | 山西省重点研发计划项目（201903D221026）、农业部公益性行业（农业）科研专项（201503124）、院农业科技创新项目“有机旱作农业研发专项”（YCX2018404） |
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| 摘 要： | 采用常规耕作（T1）、秸秆覆盖（T2）、起垄覆膜膜侧种植（T3）、起垄无膜（T4）、无垄覆膜（T5）对玉米叶片光合作用和叶片水平上的水分利用效率以及产量和产量构成因素方面进行分析研究。结果表明，玉米叶片的净光合速率（Pn）、蒸腾速率（Tr）、气孔导度（Cond）、胞间二氧化碳浓度（Ci）和水分利用效率（WUE）在不同覆盖模式下均存在显著差异，且起垄覆膜膜侧种植模式下的Pn、Cond和WUE为最大，Tr和 Ci较低。叶片水分利用效率与净光合速率和气孔导度呈极显著正相关，相关系数分别为0.94、0.98；与蒸腾速率和胞间二氧化碳浓度呈显著负相关，相关系数分别为0.92、0.96。 2018 年 T3 处理产量最高，达 10 095 kg/hm2，较 T1、T2、T4、T5 处理分别高 23.18%、0.55%、19.32 %、3.71%；2019年T3处理产量最高，达10 248 kg/hm2，较T1、T2、T4、T5处理分别高21.84 %、12.47%、15.69%、6.03%。
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| 关 键 词： | 玉米|覆盖|水分利用效率 |
| 收稿时间： | 2021/3/16 0:00:00 |
Effects on the Water Use Efficiency of Maize Leaves by Different Coverage Forms |
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| ZHAO Li,DENG Yan,GUO Hong-xi,ZHANG Li-guang,QIN Li-xi,WANG Lu-jun,WANG Chuang-yun.Effects on the Water Use Efficiency of Maize Leaves by Different Coverage Forms[J].Journal of Maize Sciences,2022,30(2):132-138,144. |
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| Authors: | ZHAO Li DENG Yan GUO Hong-xi ZHANG Li-guang QIN Li-xi WANG Lu-jun WANG Chuang-yun |
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| Institution: | College of Agronomy, Shanxi Agricultural University, Taiyuan 030031, China |
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| Abstract: | We design five different treatment methods(straw mulching practice, practice with ridges mulched with plastic film and maize planted on the two sides of the mulched ridges, practice with un-mulched ridges, plastic film mulching practice without ridge filling and conventional farming practice) to investigate photosynthetic, water use efficiencies, yield and yield components of summer maize leaves. The results showed that the net photosynthetic rates(Pn), transpiration rates(Tr), stomatal conductance(Cond), intercellular CO2 concentrations(Ci) and water use efficiency(WUE) of summer maize leaves significantly differed among the different treatment. Pn, Cond and WUE under the treatment with ridges mulched with plastic film and maize planted on plastic film side are the highest, while Tr and Ci are relatively lower; Leaf water use efficiency has a very significant positive correlation with net photosynthetic rate and stomatal conductance, and the correlation coefficients are 0.94 and 0.98 respectively. It has a significant negative correlation with transpiration rate and intercellular carbon dioxide concentration, the correlation coefficients are 0.92, 0.96 respectively. In terms of yield:in 2018, the yield of ridged film-mulching side(T3) was the highest, reaching 10 095 kg/ha, which was 23.18%, 0.55%, 19.32% and 3.71% higher than that of no ridge and no mulch(T1), straw mulching(T2), ridging without film(T4), and no ridge mulching(T5), respectively; in 2019, the yield of ridge film-mulching side(T3) was the highest, reaching 10 248. It was 21.84%, 12.47%, 15.69% and 6.03% higher than that of no ridge and no cover(T1), straw mulch(T2), ridging without film(T4) and no ridge mulching(T5), respectively. |
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| Keywords: | Maize|Cover|Water use efficiency |
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