主要气象因子对水稻产量与糙米重金属含量的影响  

Effects of Main Meteorological Factors on Rice Yield and Heavy Metal Content in Brown Rice

作　　者：尹新芳 尹鑫军 王鑫澳 孙文星 高叶敏 敖和军[1] YIN Xinfang;YIN Xinjun;WANG Xin'ao;SUN Wenxin;GAO Yeming;AO Hejun(College of Agronomy,Hunan Agricultural University,Changsha,Hunan 410128,China)

机构地区：[1]湖南农业大学农学院,湖南长沙410128

出　　处：《作物研究》2022年第5期411-416,463,共7页Crop Research

基　　金：国家自然科学基金(32172107)。

摘　　要：为探究气象因子对水稻产量及糙米重金属镉、砷、汞、铅、铬的影响,以深两优5814、C两优651、C两优87、兆优5455、谷优明占、隆两优华占为试验材料,分析了积温、降水量、日照时数对水稻产量及糙米重金属含量的影响。结果表明:积温和日照时数与产量呈极显著正相关(P<0.01),降水量与产量呈极显著负相关(P<0.01);糙米镉、砷含量与水稻产量具有正相关关系,决定系数分别为0.833 7、 0.554 3;糙米镉、砷、汞、铅含量与积温和日照时数呈极显著正相关(P<0.01),铬含量与积温和日照时数呈极显著负相关(P<0.01);糙米镉、砷、汞、铅含量与降水量呈极显著负相关(P<0.01),铬含量与降水量呈极显著正相关(P<0.01)。综合分析,积温、日照时数的增加有利于水稻产量的提高,但会提高糙米重金属镉、砷的含量;降水量的增加对水稻产量和糙米镉的积累具有抑制作用,对糙米砷的积累具有促进作用。In order to explore the effects of meteorological factors on rice yield and heavy metals cadmium,arsenic,mercury,lead and chromium in brown rice,Shenliangyou 5814,C Liangyou 651,C Liangyou 87,Zhaoyou 5455,Guyoumingzhan and Longliangyouhuazhan were used as experimental materials,the effects of accumulated temperature,precipitation and sunshine hours on rice yield and heavy metal content of brown rice were analyzed.The results showed that accumulated temperature and sunshine hours were positively correlated with yield,precipitation was negatively correlated with yield,and the contents of cadmium and arsenic in brown rice were positively correlated with rice yield.the determination coefficients were 0.8337 and 0.5543 respectively.The contents of cadmium,arsenic,mercury and lead in brown rice were significantly positively correlated with accumulated temperature and sunshine hours(P<0.01),and chromium contents were negatively correlated with accumulated temperature and sunshine hours(P<0.01).The contents of cadmium,arsenic,mercury and lead in brown rice were negatively correlated with precipitation(P<0.01),and the content of chromium was positively correlated with precipitation(P<0.01).Comprehensive analysis showed that the increase of accumulated temperature and sunshine hours was beneficial to the increase of rice yield,but increased the content of heavy metal cadmium and arsenic in brown rice,and the increase of precipitation inhibited rice yield and cadmium accumulation in brown rice,while which can promote the accumulation of arsenic in brown rice.

关 键 词：水稻 气象因子 产量 重金属 

分 类 号：S511.[农业科学—作物学]