关键词: 镉低积累, 西瓜, 品种, 筛选

Abstract:

Through multiple spots experiments from 2014-2015， this study carried out test for screening
low cadmium accumulation watermelon varieties on cadmium polluted soil，and analyzed the cadmium contents
in watermelon vine，leaf，root and fruits．The results showed that the average cadmium content in vine was
0.057 0 mg·kg^-1，in leaf was 0.062 1 mg·kg^-1，in root was 0.054 8 mg·kg^-1，in fruit was 0.009 2 mg·kg^-1
．The cadmium contents in fruit of tested watermelon varieties were all below GB18406.1—2001 Agricultural
Product Safety and Quality Pollution Free Vegetable Safety Standards（cadmium ＜ 0.05 mg·kg^-1）．
The cadmium content in different parts of watermelon was leaf ＞ vine ＞ root ＞ fruit．In soil，the cadmium
content was within the range of 0.310-9.480 mg·kg^-1．Along with the increase of cadmium content in soil，
cadmium content in watermelon fruit would increase gradually．When the cadmium content in soil was below 9.480
mg·kg^-1， the following 8 watermelon varieties‘Xiangxigua No.11’（‘Dongting No.1’），‘Xiangxigua No.19’
（‘Dongting No.3’），‘Jinlihuang’，‘Lyuhu’，‘Mitong’，‘Dongfangjiaozi’，‘Quanxin No.2’，‘Heimiren’
could be used as the optimal selection of cultivated land restoration and planting structure adjustment in cadmium
polluted area．

Key words: Low cadmium accumulation, Watermelon, Varieties, Screening