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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。
Pot experiments were conducted to study the effects of weeds mixed with barnyardgrass, Polygonum orientale, Scirpus monteissimari and Senecio on the growth of maize seedlings and zinc absorption. The results showed that the biomass of roots, stems and sheaths, leaves and shoots of corn and corn were higher than that of fruits and maize in the hybrids of E.grandis and P.japonica, and the aboveground biomass was significantly increased by 58.89% and 8.76%, and the content of chlorophyll and carotenoid were also higher than that of fruit maize. Mixed Polygonum and Chrysolophus reduced the biomass, chlorophyll and carotenoid content of fruit maize. In terms of zinc absorption, the contents of zinc in root, stem and sheath, leaf and aerial parts of corn and corn were higher than that of fruit and corn, and the content of zinc in above-ground parts increased by 1.24% and 3.89%, while the content of zinc in fruit maize mixed with Polygonum orientale and Senecio was lower than that of fruit maize. Therefore, the mixed seed barnyardgrass and Xiaofeng Peng can promote the growth of fruit maize and zinc absorption.