过量锌对油菜生长、产量和养分吸收的影响及锌在植株地上部器官中的富集特征  

Effects of excessive zinc stress on growth,yield,nutrient uptake and enrichment characteristics of zinc in above-ground organs of rapeseed(Brassica napus)

作　　者：曹春信[1,2] 刘新华 周琴[1] 江巧君[1] 袁名安 江海东[1] 

机构地区：[1]南京农业大学农业部作物生理生态重点开放实验室,江苏省信息农业高技术研究重点实验室,江苏南京210095 [2]金华市农业科学研究院,浙江金华321017

出　　处：《浙江农业学报》2011年第4期787-791,共5页Acta Agriculturae Zhejiangensis

摘　　要：以甘蓝型油菜品种‘秦优九号’为材料,通过盆栽试验研究了不同浓度锌处理对油菜生长、产量和养分吸收的影响及其在植株地上部器官中的富集特征。结果表明:低浓度锌处理(100 mg.kg-1),一定程度刺激了油菜的生长,植株的花期生物量、光合速率、产量和主要矿质元素含量等指标均与对照差异不显著。随着土壤中锌浓度的增大,植株的花期生物量、光合速率、产量、主要矿质元素含量、株高和主花序长等指标均显著下降(P<0.05),而一次分枝数变化不明显。油菜地上部不同器官对锌的富集特征差异显著,总体上呈现出茎秆中的含量大于籽粒中的趋势。A pot experiment was conducted to study the effects of different zinc treatments on growth,yield,and nutrient uptake and enrichment characteristics of zinc in above-ground organs of rapeseed（B.napus cv.＇Qinyou 9＇）.Comparing with the control,low zinc level in soil stimulated the rape growth to some extent,but had less effect on the plant biomass,photosynthetic rate yield and main mineral element contents.With the further increase of zinc level in soil,the plant biomass,photosynthetic rate,yield,main mineral element contents,height and main inflorescence length decreased gradually,while number of first branch was less affected.There were significant differences in the enrichment characteristics of zinc in above-ground organs of rapeseed,following an order of stemseeds.

关 键 词：锌 油菜 富集特征 

分 类 号：S565.4[农业科学—作物学] X53[环境科学与工程—环境工程]