农业环境科学学报
農業環境科學學報
농업배경과학학보
Journal of Agro-Environment Science
2015年
9期
1686-1692
,共7页
卢一富%李真理%阮心玲%李会勇%张红毅%田会阳%李立平
盧一富%李真理%阮心玲%李會勇%張紅毅%田會暘%李立平
로일부%리진리%원심령%리회용%장홍의%전회양%리립평
间作%冬小麦%伴矿景天%土壤%铅冶炼
間作%鼕小麥%伴礦景天%土壤%鉛冶煉
간작%동소맥%반광경천%토양%연야련
intercropping%winter wheat%Sedum plumbizincicola%soil%lead smelting
通过田间试验探讨了在河南省某铅冶炼污染石灰性土壤上冬小麦与镉超积累植物伴矿景天(Sedum plumbizincicola)间作的可行性。研究采用百农矮抗58和郑麦7698两个小麦品种,设置小麦单作和小麦与伴矿景天间作两种种植方式。结果表明,与单作相比,间作后土壤砷、镉和铅有效性均略有下降或持平。小麦与伴矿景天间作后,籽粒砷、镉和铅含量未出现显著差异(P>0.05),试验条件下小麦籽粒镉含量超过国家标准GB 2762—2012限值。间作伴矿景天地上部镉平均含量为23.4 mg·kg-1,小麦品种对伴矿景天地上部镉含量无明显影响。间作伴矿景天地上部对镉的积累量为2.12 g·hm-2。小麦与伴矿景天间作后,土壤有效氮和有效磷含量均有一定程度的上升(增加幅度2.87%~42.0%),间作对小麦籽粒产量存在一定的抑制作用(产量下降0.578%~5.57%)。试验条件下,冬小麦间作伴矿景天未起到改善小麦籽粒品质的作用,且间作条件下伴矿景天对土壤的修复能力较低。
通過田間試驗探討瞭在河南省某鉛冶煉汙染石灰性土壤上鼕小麥與鎘超積纍植物伴礦景天(Sedum plumbizincicola)間作的可行性。研究採用百農矮抗58和鄭麥7698兩箇小麥品種,設置小麥單作和小麥與伴礦景天間作兩種種植方式。結果錶明,與單作相比,間作後土壤砷、鎘和鉛有效性均略有下降或持平。小麥與伴礦景天間作後,籽粒砷、鎘和鉛含量未齣現顯著差異(P>0.05),試驗條件下小麥籽粒鎘含量超過國傢標準GB 2762—2012限值。間作伴礦景天地上部鎘平均含量為23.4 mg·kg-1,小麥品種對伴礦景天地上部鎘含量無明顯影響。間作伴礦景天地上部對鎘的積纍量為2.12 g·hm-2。小麥與伴礦景天間作後,土壤有效氮和有效燐含量均有一定程度的上升(增加幅度2.87%~42.0%),間作對小麥籽粒產量存在一定的抑製作用(產量下降0.578%~5.57%)。試驗條件下,鼕小麥間作伴礦景天未起到改善小麥籽粒品質的作用,且間作條件下伴礦景天對土壤的脩複能力較低。
통과전간시험탐토료재하남성모연야련오염석회성토양상동소맥여력초적루식물반광경천(Sedum plumbizincicola)간작적가행성。연구채용백농왜항58화정맥7698량개소맥품충,설치소맥단작화소맥여반광경천간작량충충식방식。결과표명,여단작상비,간작후토양신、력화연유효성균략유하강혹지평。소맥여반광경천간작후,자립신、력화연함량미출현현저차이(P>0.05),시험조건하소맥자립력함량초과국가표준GB 2762—2012한치。간작반광경천지상부력평균함량위23.4 mg·kg-1,소맥품충대반광경천지상부력함량무명현영향。간작반광경천지상부대력적적루량위2.12 g·hm-2。소맥여반광경천간작후,토양유효담화유효린함량균유일정정도적상승(증가폭도2.87%~42.0%),간작대소맥자립산량존재일정적억제작용(산량하강0.578%~5.57%)。시험조건하,동소맥간작반광경천미기도개선소맥자립품질적작용,차간작조건하반광경천대토양적수복능력교저。
The effect of intercropping wheat(Triticum aestivum)with Cd hyperaccumulator Sedum plumbizincicola was investigated in a field experiment on calcareous, lead smelting contaminated soils in Henan Province. Wheat varieties Bainong Aikang 58 and Zhengmai 7698 were either monocultured or intercropped with Sedum plumbizincicola in alternating rows. Intercropping resulted in non-significant lower or similar extractability of soil As, Cd and Pb compared to the monocultured soil. No significant difference was found in grain concen-trations of As, Cd and Pb between intercropped and monocultured wheat(P>0.05), grain Cd concentrations of all treatments exceeded the maximum permissible concentration set by national standard GB 2762—2012. Wheat variety had no influence on the Cd concentration of the hyperaccumulator, and mean shoot concentration of Cd was 23.4 mg·kg-1. Shoot accumulation of Cd of Sedum plumbizincicola was 2.12 g·hm-2. Availability of nitrogen(N)and phosphorus(P)in intercropped soil were 2.87%~42.0%higher than the monocultured soil, while the grain yields of the intercropped wheat were 0.578%~5.57%lower than the monocultured wheat. The results suggest that intercropping with alternating rows of wheat and Cd hyperaccumulator is not effective in reducing As, Cd and Pb concentrations in wheat grain, and the phytoextraction of Cd from the soil by the Sedum plumbizincicola is negligible.