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覆膜方式和密度对旱地绿豆光合特性及产量的影响

Effects of Film Mulching Modes and Population Density on Photosynthesis Characteristics and Yield of Mung Bean in Arid Land
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摘要 以晋绿豆8号为材料,采用双因素完全随机区组设计,研究不同覆膜方式和密度对旱地绿豆各生育期植株叶面积指数(LAI)、叶绿素相对含量(SPAD)、光合特性及产量的影响。结果表明,在绿豆整个生育期,随着密度增加,叶面积指数(LAI)、净光合速率(Pn)、叶片水分利用效率(LWUE)均增加,蒸腾速率(Tr)降低。与膜上穴播与露地条播相比,膜侧穴播SPAD值分别高4.15%、9.40%,LAI高13.1%、24.5%,净光合速率(Pn)高10.15%、9.93%,蒸腾速率(Tr)高7.5%、11.2%,分枝期到始熟期叶片水分利用效率(LWUE)高3.98%、4.73%。与露地条播相比,覆膜能够明显提高绿豆株高、分枝数、单株荚数;随密度增加,绿豆单株荚数与产量提高明显,膜侧穴播和膜上穴播产量分别提高24.2%、19.9%。其中膜侧穴播(密度16.50万株/hm2)种植模式更有利于发挥旱地绿豆的增产潜能。 The double-factor completely random design and the variety of mung bean Jinlüdou 8 were used in the experiment to study the effects of film mulching modes on leaf area index(LAI), relative chlorophyll content(SPAD), photosynthetic rate(Pn), yield and its components of mung bean in arid land. The results showed that during the whole growing period of mung bean, along with the density increased, the SPAD, LAI, Pn increased, but transpiration rate(Tr) decreased. Compared with film dibble and traditional planting, the pattern of film side dibble made the SPAD increased by 4.15% and 9.40%, and LAI increased by 13.1% and 24.5%. During the whole growing period, Pn increased by 10.15% and 9.93%,and Tr increased by 7.5% and 11.2%. From branching stage to the beginning of maturity,water use efficiency in leaf(LWUE) was increased by 3.98% and 4.73%.Compared with traditional planting, the plastic film mulching could increase mung bean plant height, branch number, number of pods per plant. With the increase of population density, the number of pods per plant and yields were increased significantly. Grain yield of film side dibble and lateral film dibbling were increased by 24.2% and 19.9% respectively. Among them, the pattern of film side dibble(population density 165 000 plants/hm~2) was favorable for improving yield of mung bean in arid land.
作者 张春明 赵雪英 闫虎斌 朱慧珺 张泽燕 张耀文 Zhang Chunming, Zhao Xueying, Yan Hubin, Zhu Huijun, Zhang Zeyan, Zhang Yaowen (Crop Science Institute, Shanxi Academy of Agricultural Sciences, Taiyuan 030031, Shanxi, China)
出处 《作物杂志》 北大核心 2018年第3期108-115,共8页 Crops
基金 现代农业产业技术体系(CARS-09-G11) 山西省农业科学院重点项目(YGG1601)
关键词 覆膜方式 绿豆 光合效率 群体密度 产量 Film mulching modes Mung bean Photosynthetic rate Population density Yield
作者简介 张春明,副研究员,主要从事食用豆育种与栽培研究;张耀文为通信作者,研究员,主要从事食用豆育种与栽培研究
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