| 不同年限蔬菜大棚土壤养分和酶活性的变化 |
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| 引用本文： | 吴玉光,李吉进,王美菊.不同年限蔬菜大棚土壤养分和酶活性的变化[J].中国农业大学学报,1997(Z2). |
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| 作者姓名： | 吴玉光 李吉进 王美菊 |
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| 作者单位： | 北京市农林科学院营资所;100081; |
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| 摘 要： | 本试验研究了4年、9年和17年3个不同种植年限的塑料大棚秋黄瓜生育期内土壤养分含量和3种酶活性的变化。结果表明:土壤养分含量和3种酶的活性以建棚9年的最高,其次是4年的,最低的是17年的,说明建棚9年时,土壤肥力达到高峰,以后逐渐下降。3种酶活性与土壤有机质、全氮的含量具有显著的相关性,反映3种酶活性与土壤肥力和养分供给有一定的关系。
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| 关 键 词： | 大棚菜地 土壤养分 土壤酶活性 |
The Changes of Soil Nutrients and Enzyme Activities in the Protected Land with Different Culturing Years |
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| Wu Yuguang Li Jijing Wang Meiju.The Changes of Soil Nutrients and Enzyme Activities in the Protected Land with Different Culturing Years[J].Journal of China Agricultural University,1997(Z2). |
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| Authors: | Wu Yuguang Li Jijing Wang Meiju |
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| Institution: | Wu Yuguang Li Jijing Wang Meiju (The institute of Plant Nutrition & Resources,Beijing Academy of Agriculture , Forest Sciences,Beijing,100081,China) |
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| Abstract: | Soil organic matter,total N,available P and K,and three enzyme activities were measured in the protected land with different culturing time.It was found that these parameters were high in the 9 years old cultured soil,low in the 17 years old cultured soil. This indicates that soil fertility gradually increases durig 9 years culturing stage,but after- ward decreas.The three enzyme activities were closely linearly related with soil organic matter and total N.The enzyme activities can be used as an indicator o... |
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| Keywords: | protected soil soil nutrient soil enzyme activity |
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