红壤坡地果园不同水土保持措施对磷素流失的影响
在坡度为25%的江西红壤坡地果园,采取了7种不同水土保持措施,并设对照(全园裸露)进行比较,研究其磷素流失特征,结果表明:(1)在不同水土保持措施的作用下,红壤坡地果园土壤磷素流失差异明显,流失最严重的为对照,最轻的为百喜草全园覆盖;对照磷素流失量是7个不同水土保持措施磷素流失平均量的3.4倍,是百喜草全园覆盖的8.5倍。(2)可溶性磷(DissolvedPhosphorus,DP)是试验中磷素流失的主要形式,占处理与对照组磷素年流失总量的75.5%,泥沙结合态磷(ParticulatePhosphorus,PP)只占流失总量的24.5%,其中水平式梯田梯壁植草、百喜草全园覆盖、百喜草带状覆盖...
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| Autore principale: | |
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| Natura: | Artigo |
| Lingua: | Chinês |
| Pubblicazione: |
Editorial Department of Journal of Soil and Water Conservation
2004-01-01
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| Serie: | Shuitu Baochi Xuebao |
| Soggetti: | |
| Accesso online: | http://www.stbcxb.com.cn/thesisDetails?columnId=76906958&Fpath=home&index=0 |
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