| 徐晓锋,苗艳芳,郭大勇,贾兴娜.蔬菜保护地土壤磷积累与转化研究[J].干旱地区农业研究,2008,(1):25~28 |
| 蔬菜保护地土壤磷积累与转化研究 |
| Phosphorus accumulation and inorganic phosphorus fractions in greenhouse soils |
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| DOI：10.7606/j.issn.1000-7601.2008.01.04 |
| 中文关键词: 保护地土壤 磷 积累 生物有效性 无机磷分级 |
| 英文关键词:greenhouse soil phosphorus accumulation bio－availability inorganic phosphorus fractions |
| 基金项目:河南科技大学科研启动基金（09001088） |
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| 中文摘要: |
| 在洛阳市郊典型蔬菜栽培区?对蔬菜保护地和小麦／玉米轮作田进行对比研究?并采用蒋—顾无机磷分级方法对土壤无机磷进行分级?以揭示蔬菜保护地土壤磷素积累、转化及有效性与棚龄的关系。结果表明?保护地土壤总磷含量随棚龄增加而不断增加?在15～17年日光温室中达到4．22g／kg；有效磷在11年棚龄左右达到最大值?此后略有下降；在低棚龄阶段?无机磷主要以速效态和缓效态组分积累?很少以难效态组分积累；在高棚龄阶段?主要以难效态组分积累?其它组分则显著下降；但棚龄对钙结合态磷与非钙结合态磷间比例没有影响。 |
| 英文摘要: |
| According to Jiang－Gu inorganic phosphorus fractions classification systems?the characteristic of phosphorus accumulation?inorganic phosphorus fractions and bio-availability how to change with vegetable cultivation years in greenhouse soil in Luoyang suburb were studied．The difference between greenhouse and white-corn rotation land were discussed too．The results indicated that while vegetable cultivation years were increased ?the total phosphorus of soil was increased too．It was achieved4．22g／kg of total phosphorus in15～17 years greenhouse．Available phosphorus concentration were increased too and it achieved the maximum in 11 years．The most amount phosphorus were accumulated in Ca2－P、Ca8－P、Al－P、Fe－P in the first 5years and the dominat fraction were Ca2－P、Ca8－P．While vegetable cultivation years were increased?the amount of phosphorus accumulated in O－P、Ca10－P were increased．And Ca10－P was the dominant fraction．Others fractions’concentration were decreased while were increased．Vegetable cultivation years had no influence on propotion of calcium combined phosphorus and no calcium combined phosphorus． |
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