| 杨建霞,王鑫.施用包膜控释尿素对保护地黄瓜根区土壤微生物区系及酶活性的影响[J].干旱地区农业研究,2008,(1):42~46 |
| 施用包膜控释尿素对保护地黄瓜根区土壤微生物区系及酶活性的影响 |
| Effect of coated urea fertilization on the protective cultivation of cucumber’s roots of microorganism and enzyme activity in soil |
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| DOI：10.7606/j.issn.1000-7601.2008.01.08 |
| 中文关键词: 黄瓜 包膜控释尿素 根区微生物 酶活性 |
| 英文关键词:cucumber coated urea fertilization root's microorganism activity of enzyme |
| 基金项目:甘肃省庆阳市科技攻关项目(GDK031-1-5)； 陇东学院自然基金项目(Szzk0312) |
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| 中文摘要: |
| 以保护地黄瓜为研究对象,研究施用包膜控释尿素对黄瓜根区土壤微生物数量及酶活性的影响。结果表明:控释尿素可增加细菌、放线菌的数量,对三大类微生物类群的影响效应依次为:细菌>放线菌>真菌;控释尿素对细菌和真菌的影响依次为:D60>D90>U>CK,对放线菌的影响不明显;控释尿素与普通尿素配比时随着控释尿素用量的增加,多酚氧化酶、脲酶活性升高,对碱性磷酸酶、过氧化氢酶和转化酶活性无明显影响;控释尿素对多酚氧化酶活性的影响依次为D90>D60>U>CK,对转化酶活性增加效果最为显著;控释尿素对全氮的影响尤为突出,对土壤有机质、全氮、碱解氮、硝态氮、铵态氮及速效钾有明显提高作用,可降低速效磷含量。 |
| 英文摘要: |
| We choose the protective cultivation of cucumber to be the research object and study the effect of coated urea fertilization on the protective cultivation of cucumber's roots of the number of microorganism and enzyme activity in soil.The result shows that: the coated urea fertilization could increase the number of grimes and actinomyces,also,the effect of the coated urea fertilization on the three majority of grimes would be like this: Bacteria>actinomyces>fungi.The effect of coated urea fertilization on the bacteria would be: D60>D90>U>CK,but the effect is hardly obvious on actinomyces.The amount of the coated urea fertilization increase gradually when the coated urea mixed with the normal urea,the activity of Polyphenol oxidaseand Urease would increase;but it has no obvious effect on the activity of Phosphatse,Hydrogen peroxidase and Invertase.The effect of coated urea fertilization on Polyphenol oxidaseoxidase would be: D90>D60>U>CK;else,it has a obvious effect on increasing the activity of Invertase.The coated urea fertilization has a outstanding effect on the total nitrogen,besides,it would improve the amount of soil organism,total nitrogen,Alkal.N, Nitric.N,Amm.N and Avail.K obviously,but it has an opposite regularity on the amount of Avail.P with other items. |
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