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| 土壤质量密度对玉米根系N、P、K含量及土壤磷酸酶的影响 | |
| 引用本文： | 才晓玲,李志洪,何伟,李凯.土壤质量密度对玉米根系N、P、K含量及土壤磷酸酶的影响[J].甘肃农业大学学报,2011,46(3):38-42. |
| 作者姓名： | 才晓玲 李志洪 何伟 李凯 |
| 作者单位： | 1. 临沧师范高等专科学校数理系,云南临沧,677000 2. 吉林农业大学资源与环境学院,吉林长春,130118 3. 临沧市第三中学,云南临沧,677000 |
| 摘 要： | 采用回填土法控制土壤质量密度,测定不同质量密度、不同土层玉米根系所含氮、磷、钾养分及土壤酸性和中性磷酸酶.结果表明:在0～20 cm土层,随着土壤质量密度的增加,玉米根系中氮和钾的含量呈增加趋势,而磷含量却呈降低趋势;在20～60 cm土层,根系中氮磷钾含量均随土壤质量密度的增加而降低;在0～60 cm土层,随着土壤质... |
| 关 键 词： | 土壤质量密度 玉米根系 养分含量 土壤磷酸酶 |
Effects of soil bulk density on N,P and K contents and phosphatase of soil from maize root |
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| CAI Xiao-ling,LI Zhi-hong,HE Wei,LI Kai.Effects of soil bulk density on N,P and K contents and phosphatase of soil from maize root[J].Journal of Gansu Agricultural University,2011,46(3):38-42. | |
| Authors: | CAI Xiao-ling LI Zhi-hong HE Wei LI Kai |
| Abstract: | The method of backfilling soil was used to control soil bulk density in this test,thus the N,P and K contents as well as acid phosphatase and neutral phosphatase of soil with different bulk density from different soil layers of maize root were determined.The results showed that with the increasing of soil bulk density at 0~20 cm soil layer,the contents of N and K both increased,while the content of P decreased.At 20~60 cm soil layer,the contents of N,P and K all decreased with the increasing of soil bulk density.At 0~60 cm soil layer,the acid phosphatase decreased with the increasing of soil bulk density,while the neutral phosphatase increased. |
| Keywords: | soil bulk density maize root nutrient soil phosphatase |
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