土壤镉含量对西瓜茎叶和果实镉含量的影响  

Influences of soil cadmium content on bind and fruit cadmium contents in watermelon

作　　者：李涵[1] 王志伟[1,2] 孙波[1] 邹甜[1] 孙小武[1] 

机构地区：[1]湖南农业大学园艺园林学院,长沙410128 [2]湖南省西瓜甜瓜研究所,长沙410125

出　　处：《果树学报》2017年第3期337-343,共7页Journal of Fruit Science

基　　金：现代农业产业技术体系建设专项(CARS-26-09)

摘　　要：【目的】探明土壤镉含量与西瓜茎叶、果实镉含量的关系,以确定西瓜安全生产的土壤镉含量阈值。【方法】采用盆栽的方法,研究了不同土壤镉含量条件下,‘黑马王子’(无籽西瓜)和‘黑媚娘’(有籽西瓜)的根、茎叶、果实的镉含量。【结果】明确了镉在西瓜植株内的分布规律为:茎叶>根>果实,西瓜果实镉含量随着土壤镉含量的增加而升高。【结论】根据不同土壤镉含量与西瓜果实镉含量的拟合方程,推算出‘黑马王子’和‘黑媚娘’安全生产的土壤(p H<5.6)镉含量分别为10.04和12.69 mg·kg^(-1)。【Objective】Watermelons are Cucurbitaceae plants, which are juicy and sweet, refreshing andloved by people everywhere. It is a fruit for summer consumption. The Hunan region has a long history ofwatermelon cultivation, with its wide open areas, an annual planting space of about 140 000 hectares, whichranks fourth in the country, providing considerable economic benefit, and it also represents an importanthorticultural crop for the Hunan region. The increased development of the economy and society, the exploi-tation of minerals, smelting, transportation and the use of mineral fertilizers, has caused cadmium（Cd） to be-come one of the main pollutants in the environment. The most effective way to control Cd contaminated soilis to cultivate and grow crop varieties with a low accumulation of non-edible plants and edible organs.They will not only provide for the gradual elimination of cadmium in the soil, but also provide for the ratio-nal use of the land, and to ensure sustainable land output. Within the Hunan province, heavy metal exceedsthe standards as part of the adjustment of the planting structure, while also having a mild and moderate areathat makes it ideal for watermelon planting. However, cadmium exceeded the standard allowed in the pro-duction of the watermelon fruit, with the cadmium content in excess of the standard, and therefore, thethreshold value of the cadmium content of the soil and the cadmium content of the watermelon fruit is a sig-nificant issue of concern, and also represents an important reference for the planting structure adjustment.【Methods】By using the potted soil method, and respectively digging soil with different levels of cadmiumpollution in Zhuzhou County of Hunan Province as follows： T1（Cd： 1.9 mg·kg（-1）, p H 5.6）; T2（Cd： 3.59mg·kg（-1）, p H 5.34）; T3（Cd： 7.03 mg·kg（-1）, p H 5.48）, detection of the Cd content、soil physical and chemicalindicator of the soil in the laboratory, and digging the soil from the experimental field of the College o

关 键 词：西瓜 茎叶 果实 土壤 镉 

分 类 号：S651[农业科学—果树学]