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Effects of Intercropping with Weeds on Growth and Zinc Uptake by Fruit Maize Seedlings

混种杂草对水果玉米幼苗生长及锌吸收的影响(英文)
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摘要 A pot experiment was conducted to study the effects of intercropping with Echinochloacrusgali, Polygonumorientale, Conyzacanadensis and Senecioscan-dens on growth and zinc uptake of fruit maize seedlings. The results showed that intercropping with E. crusgali_and C. canadensis increased root, stem and sheath, leaf and aboveground part biomasses of fruit maize seedlings, increased above-ground part biomasses of fruit maize seedlings by 58.89% and 8.76%, respectively;but intercropping with P. orientale and S. scandens decreased the biomass of fruit maize seedlings. Compared with monoculture, intercropping with E. crusgali_and C. canadensis also enhanced the chlorophyl and carotenoid contents of fruit maize seedlings, and intercropping with P. orientale_and S. scandens decreased them. On zinc uptake, intercropping with E. crusgali_and C. canadensis_enhanced the zinc contents in roots, stems and sheaths, leaves and aboveground part of fruit maize seedlings, enhanced by 1.24% and 3.89% in aboveground part; intercropping with P. orientale_and S. scandens decreased zinc contents in fruit maize seedlings. There-fore, intercropping with E. crusgali_and C. canadensis could promote the growth and zinc uptake of fruit maize seedlings. 通过盆栽试验,研究了分别混种稗草、红蓼、小飞蓬、千里光4种农田杂草对水果玉米幼苗生长和锌吸收的影响。结果表明,混种稗草及小飞蓬的水果玉米根系、茎鞘、叶片及地上部分生物量均高于水果玉米单种,其中,地上部分生物量较水果玉米单种分别显著提高了58.89%和8.76%,且叶绿素含量及类胡萝卜素含量也较水果玉米单种有所提高;混种红蓼及千里光降低了水果玉米的生物量、叶绿素含量及类胡萝卜素含量。就锌吸收而言,混种稗草及小飞蓬的水果玉米根系、茎鞘、叶片及地上部分锌含量均高于水果玉米单种,其中地上部分锌含量分别较水果玉米单种提高1.24%和3.89%,而混种红蓼及千里光的水果玉米锌含量低于水果玉米单种。因此,混种稗草及小飞蓬能够促进水果玉米的生长及锌吸收。
出处 《Agricultural Science & Technology》 CAS 2016年第12期2792-2796,2799,共6页 农业科学与技术(英文版)
基金 Supported by Application Program of Science&Technology Department of Sichuan Province(2014JY0046)~~
关键词 Fruit maize WEED lntercropping Zinc GROWTH 水果玉米 杂草 混种 生长
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