贵州省凯里市农作物籽实与根系土硒含量特征与应用

Characteristics and Application of Selenium Content in Seeds and Rhizospheric Soil of Crops in Kaili City,Guizhou Province

本文以水稻、玉米、葡萄共144件农作物样品及其对应的144件根系土样品作为研究对象,研究农作物中Se的富集程度,为凯里市富硒农作物的科学种植提供依据。研究表明,在凯里地区碳酸盐岩性上覆土壤和黄壤中农作物水稻的Se含量较高,分别为0.077 mg/kg和0.079mg/kg。在研究的144件农作物样品中,水稻籽实平均Se含量为0.068 mg/kg,是同比研究农作物中最高,且其籽实与其对应根系土中Se含量在同比农作物中也具有较强的相关性。结合凯里市地质背景、地层岩性及当地交通情况及居民的农作物种植情况等,可以在舟溪镇发展富硒农产品,在龙场镇发展冷水田富硒大米。

In this paper,144 crop samples of rice,corn and grape and their corresponding 144 root soil samples were taken as the research objects to study the Se enrichment degree of crops,so as to provide a basis for scientific planting of selenium-rich crops in Kaili city.The results showed that the Se content of crop rice was higher in the carbonate lithologic overlying soil and yellow soil in Kaili area,which were 0.077 mg/kg and0.079 mg/kg respectively.Among the 144 crop samples studied,the average Se content of rice seeds was 0.068 mg/kg,which was the highest among the crops studied in the same period of last year.Moreover,the Se content of rice seeds and its corresponding root soil was also strongly correlated in the same period of last year.According to the geological background,stratum and lithology of Kaili city,local traffic conditions and residents’crop planting,selenium-rich agricultural products can be developed in Zhouxi Town and selenium-rich rice in longchang Town.