| Effect of film mulching modes on photosynthesis characteristic and yield of broomcorn millet in arid land |
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| DOI：10.7606/j.issn.1000-7601.2014.06.025 |
| Key Words: film mulching modes broomcorn millet photosynthesis characteristic LWUE grain yield |
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| Abstract: |
| The variety of Jinshu 7 was used as material to study the effect of film mulching modes on leaf area per plant, relative chlorophyll content (SPAD), photosynthesis characteristic and yield of broomcorn millet in arid land. The results showed that compared with flat film dibble and traditional planting, average flag SPAD of film side dibble increased by 3.8% and 10.2%, and leaf area per plant increased by 17.9% and 59.1% from tillering to maturing stages, respectively. The flag leaf photosynthetic rate and transpiration rate under film side dibble were higher than flat film dibble (3.8% and 28.7%) and traditional planting (7.5% and 23.4%) from jointing to maturing stages. But the decline of leaf water use efficiency (LWUE) under film side dibble were 16% and 25% less than flat film dibble and traditional planting, respectively. By contrast, flat film dibble and traditional planting, grain yield under film side dibble increased by 7.6% and 51.2%, respectively. Therefore, the pattern of film side dibble is favorable for improving photosynthesis characteristic and yield of broomcorn millet in arid land. |
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