Effect of film mulching modes on photosynthesis characteristic and yield of broomcorn millet in arid land
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 in-creased 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 pho-tosynthesis characteristic and yield of broomcorn millet in arid land .
film mulching modesbroomcorn milletphotosynthesis characteristicLWUEgrain yield
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