| 摘要: |
| 互花米草引种到福建罗源湾两年后,使海滩盐沼土有机质提高35—44%,含N量提高80%左右,总P和总K没有多大变化,速效P含量降低3.5—7%。在互花米草盐沼生态系统中,不同相中的N、P、K元素分布量的关系是:植物〉土壤〉海水。10月中旬采样测试表明,互花米草的含N量,地上部分高于地下部分;含P及含K量则相反。在对N、P、K的吸收、分布方面,三个生态型差异不显著。 |
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| DISTRIBUTION OF N,P,K IN SALT MARSH OF SPARTINA ALTERN1FLORA IN TIDAL LAND LUOYUAN, FUJIAN |
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| Abstract: |
| Since Spartina alterniflora was transplanted in the estuary Luoyuan, Province Fujian, organic matter content has increased 35-40%, N content 80%, effective P content decreased 3.5-7%, total P and total K remained the same in the salt marsh soit. In the salt marsh ecosystem the relationship of N, P, K distributed in different phases was: plant>sediment> sea water. The leaves and shoots of Spartina alterniflora taken in October were richer in N content but poorer in P and K content than the roots, there was not significant difference in their absorption and distribution in three ecotypes. |
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