双季稻田施用土壤调理剂的生态环境效应初探  

Effects of Ecological Environment on Double Cropping Rice Field with Soil Conditioner

作　　者：吴家梅 谢运河[1,2,3] 田发祥 官迪[1,2] 陈锦 纪雄辉[1,2,3] 柏连阳 WU Jia-mei;XIE Yun-he;TIAN Fa-xiang;GUAN Di;CHEN Jin;JI Xiong-hui;BAI Lian-yang(Hunan Institute of Agro-Environment and Ecology, Key Lab of Prevention, Control and Remediation of Soil Heavy Metal Pollution in Hunan Province, PRC;Key Laboratory of Agro-Environment in Midstream of Yangtze Plain, Minister of Agriculture Changsha 410125, PRC;Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Changsha 410125,PRC;Hunan Academy of Agricultural Sciences, Changsha 410125, PRC)

机构地区：[1]湖南省农业环境生态研究所农田土壤重金属污染防控与修复湖南省重点实验室,湖南长沙410125 [2]农业部长江中游平原农业环境重点实验室,湖南长沙410125 [3]南方粮油作物协同创新中心,湖南长沙410125 [4]湖南省农业科学院,湖南长沙410125

出　　处：《湖南农业科学》2017年第12期75-77,共3页Hunan Agricultural Sciences

基　　金：国家重点研发计划(2017YFD0801504);长沙市科技计划项目(kq1703010);国家水稻产业体系岗位科学家(CARS-01-28)

摘　　要：通过双季稻田施用不同用量的调理剂试验,研究土壤调理剂对稻田土壤pH值、福寿螺活性、水稻产量以及稻米重金属镉含量的影响。结果表明:(1)随着调理剂用量的增加,土壤pH值呈现上升趋势,稻田土壤pH值上升0.05~0.20个pH值单位;(2)早稻稻田的福寿螺数量高于晚稻稻田,稻田施用调理剂,早、晚稻水稻移栽后的福寿螺活体数量分别比对照减少95.0%和87.5%;(3)稻米镉含量随土壤调理剂用量的增加而降低,早、晚稻稻米镉平均含量分别比对照处理降低19.1%和16.8%;(4)早、晚稻水稻产量分别为5 833~6 056 kg/hm^2和7 153~7 500 kg/hm^2,稻田施用不同用量调理剂,对早、晚稻水稻产量无明显影响。由此可见,施用土壤调理剂能有益于稻田生态环境,是值得推荐的一种土壤调理剂,施用量的推荐值为225.00 kg/hm^2。The effects of soil conditioner on paddly soil pH value,the Ampullaria gigas spix activity,rice cadmium content and rice yield were investigated in a experiment on the different dosage ofsoil conditioners in double cropping rice field.The results showed that:(1)The pH value of soil increased with the soil conditioners amounts,the paddy soil pH value increased in0.05-0.20units.(2)The number of Ampullaria gigas spix in early rice paddies is higher than late rice paddies.Compared with the control,the number of Ampullaria gigas spixin early and late rice paddies which under the dea with soil conditioner were reduced by95%and87.5%after rice transplantation,respectively.(3)The cadmium content of rice was decreased with the increased of soil conditioner.The average cadmium content of early and late rice decreased by19.1%and16.8%compared with the control,respectively.(4)The early and late rice yield were5833-6056and7153-7500kg/hm2.There were no significant difference on rice yields which among the different application rates of soil conditioner.Therefore,it could be beneficial to the ecological environment of paddy field to application with soil conditioner,and the recommended amount of application in paddy field was225.00kg/hm2.

关 键 词：土壤调理剂 福寿螺 土壤镉 土壤PH值 

分 类 号：X53[环境科学与工程—环境工程] S152.7[农业科学—土壤学]