期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
基于植物功能-结构模型的玉米-大豆条带间作光截获行间差异研究 被引量:5
1
作者 李双伟 朱俊奇 +4 位作者 jochem b.evers Wopke VAN DER WERF 郭焱 李保国 马韫韬 《智慧农业(中英文)》 2022年第1期97-109,共13页
间作种植形成了异质冠层空间结构,但因此导致的作物生长、表型和光截获的行间差异目前还少有定量化。为解析条带间作生产力的行间差异,本研究基于田间观测数据构建植物功能-结构模型(Functional-Structural Plant Model,FSPM),量化间作... 间作种植形成了异质冠层空间结构,但因此导致的作物生长、表型和光截获的行间差异目前还少有定量化。为解析条带间作生产力的行间差异,本研究基于田间观测数据构建植物功能-结构模型(Functional-Structural Plant Model,FSPM),量化间作系统中光截获的行间差异。于2017—2018年开展了玉米和大豆单作、2行玉米和2行大豆的2:2 MS间作以及3行玉米和6行大豆的3:6 MS间作田间试验。基于植物生长平台GroIMP开发了玉米-大豆间作的FSPM,模型较好地模拟了叶面积指数(Leaf Area Index,LAI)、株高和光截获系数动态三个指标,均方根误差(Root Mean Square Error,RMSE)分别为0.24~0.70 m^(2)/m^(2)、0.06~0.17 m和0.06~0.10。田间试验结果表明,间作种植显著增加了玉米节间直径。受玉米遮阴影响,大豆节间变长、变细,且随大豆条带变窄差异越明显。模型模拟的2:2 MS间作玉米光截获比单作玉米高35.6%,3:6 MS边行玉米和内行玉米的光截获分别比单作玉米高27.8%和20.3%。2:2 MS与3:6 MS边行大豆的光截获比单作大豆分别少36.0%和28.8%;3:6 MS大豆内Ⅰ行和内Ⅱ行比单作大豆的光截获分别少4.1%和1.8%。基于三维FSPM,未来可进行不同生长环境下间作种植模式等的布局优化,以达到最佳系统光截获优势。 展开更多
关键词 玉米-大豆间作 植物功能-结构模型 光截获 三维结构 表型可塑性 行间差异
下载PDF
LIGHT INTERCEPTION AND USE EFFICIENCY DIFFER WITH MAIZE PLANT DENSITY IN MAIZE-PEANUT INTERCROPPING 被引量:7
2
作者 Qi WANG Zhanxiang SUN +8 位作者 Wei BAI Dongsheng ZHANG Yue ZHANG Ruonan WANG Wopke VAN DER WERF jochem b.evers Tjeerd-Jan STOMPH Jianping GUO Lizhen ZHANG 《Frontiers of Agricultural Science and Engineering》 2021年第3期432-446,共15页
Intercropping increases crop yields by optimizing light interception and/or use efficiency.Although intercropping combinations and metrics have been reported,the effects of plant density on light use are not well docu... Intercropping increases crop yields by optimizing light interception and/or use efficiency.Although intercropping combinations and metrics have been reported,the effects of plant density on light use are not well documented.Here,we examined the light interception and use efficiency in maize-peanut intercropping with different maize plant densities in two row configurations in semiarid dryland agriculture over a two-year period.The field experiment comprised four cropping systems,i.e.,monocropped maize,monocropped peanut,maize-peanut intercropping with two rows of maize and four rows of peanut,intercropping with four rows of maize and four rows of peanut,and three maize plant densities(3.0,4.5 and 6.0 plants m^(-1) row)in both monocropped and intercropping maize.The mean total light interception in intercropping across years and densities was 779 MJ·m^(-2),5.5%higher than in monocropped peanut(737 MJ·m^(-2))and 7.6%lower than in monocropped maize(843 MJ·m^(-2)).Increasing maize density increased light interception in monocropped maize but did not affect the total light interception in the intercrops.Across years the LUE of maize was 2.9 g·MJ–1 and was not affected by cropping system but increased with maize plant density.The LUE of peanut was enhanced in intercropping,especially in a wetter year.The yield advantage of maize-peanut intercropping resulted mainly from the LUE of peanut.These results will help to optimize agronomic management and system design and provide evidence for system level light use efficiency in intercropping. 展开更多
关键词 dryland agriculture light interception light use efficiency maize-peanut intercropping SEMIARID
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部