摘要
以低镉积累的鲜食用甘薯品种普薯32及淀粉加工用甘薯品种湘薯98为材料,在典型镉重度污染稻田种植结构调整区域开展了甘薯替代种植模式的生产试验。结果表明:普薯32与湘薯98的平均单产分别为45917.2与54371.8 kg/hm^(2),在水改旱稻田种植均表现出高产、稳产特性;普薯32平均产值为61983元/hm^(2);湘薯98平均鲜薯产值为48465元/hm^(2);湘薯98折算淀粉加工产值为162844元/hm^(2)。在土壤全镉含量为0.94~1.84 mg/kg的稻田区,测得普薯32鲜薯镉含量范围为0.006~0.021 mg/kg,湘薯98鲜薯镉含量范围为0.011~0.045 mg/kg,淀粉制样镉含量为0.003~0.014 mg/kg,相关农产品镉含量均未超出国家相关限量标准值(0.1 mg/kg)。同时,该研究发现甘薯淀粉加工制品镉含量显著低于鲜薯镉含量。
Using a table sweet potato variety Pushu 32 with the character of low cadmium accumulation and a sweet potato variety Xiangshu 98 for starch-processing purpose as materials,the production experiment of alternative planting mode of sweet potato was carried out in the adjustment area of planting structure in cadmium heavy contaminated paddy fields.The results showed that the average yields of Pushu 32 and Xiangshu 98 were 45917.2 kg/hm^(2) and 54371.8 kg/hm^(2),respectively,showing high and stable yield characteristics in paddy fields under dryland cultivation mode.The average output value of Pushu 32 was 61983 CNY/hm^(2).The average fresh root tuber output value of Xiangshu 98 was 48465 CNY/hm^(2);the starch-processing output value was 162844 CNY/hm^(2).In contrast to the total cadmium contents of 0.94-1.84 mg/kg in the paddy fields,the cadmium content in Pushu 32 fresh root tuber was 0.006-0.021 mg/kg,in Xiangshu 98 fresh root tuber was 0.011-0.045 mg/kg,and in the starch samples was 0.003-0.014 mg/kg,all of which did not exceed the relevant national standard value(0.1 mg/kg).At the same time,our research found that the cadmium content of sweet potato starch products was significantly lower than that of fresh sweet potato.
作者
张道微
赵修忠
张亚
董芳
黄艳岚
项伟
张超凡
ZHANG Dao-wei;ZHAO Xiu-zhong;ZHANG Ya;DONG Fang;HUANG Yan-lan;XIANG Wei;ZHANG Chao-fan(Hunan Crop Research Institute,Changsha 410125,PRC;Agriculture and Rural Affairs Bureau of Xiangtan County,Xiangtan 411228,PRC)
出处
《湖南农业科学》
2021年第11期51-54,共4页
Hunan Agricultural Sciences
基金
国家甘薯产业技术体系(CARS-11-C-16,2021)
食用作物安全性评价(湘农财指2019年33号文)
湖南省重点研发专项(2020NK2042)
湖南省甘薯工程技术研究中心(2018TP2032)。
关键词
镉污染稻田
替代种植
甘薯
镉含量
限量标准值
cadmium-contaminated paddy field
alternative planting
sweet potato
cadmium content
limit standard value
