ZHANG Li-na,YU Yong,HAN Bing,et al.Effect of Melon Continuous Cropping on Soil Fertility and Soil Enzyme Activity[J].HEILONGJIANG AGRICULTURAL SCIENCES,2016,(06):79-81.[doi:10.11942/j.issn1002-2767.2016.06.0079]
甜瓜连作对土壤肥力及酶活性的影响
- Title:
- Effect of Melon Continuous Cropping on Soil Fertility and Soil Enzyme Activity
- 文章编号:
- 1002-2767（2016）06-0079-03
- Keywords:
- melon; continuous cropping; soil fertility; soil enzyme activity
- 分类号:
- S652.061
- 文献标志码:
- A
- 摘要:
- 为揭示甜瓜连作障碍的发生机理，维护健康的农田生态系统，从而保证甜瓜产业的健康可持续发展，采用盆栽试验研究甜瓜连作对土壤肥力及酶活性的影响。结果表明:甜瓜连作5 a后，钾肥缺失明显，土壤中速效钾含量较未连作土壤下降了47.26%；氮肥出现富集现象，全氮量较未连作土壤提高了44.92%，磷肥保持相对稳定。过氧化氢酶活性随连作年限增加显示逐年上升趋势，而脲酶和磷酸酶则分别下降了31.25%和31.54%，这种下降将不利于作物对氮素及磷素的吸收利用。
- Abstract:
- In order to reveal the mechanism of the melon continuous cropping obstacle,maintain a healthy farmland ecosystem environment,thus to ensure healthy and sustainable development of melon crop,the effect of melon continuous cropping on soil fertility and enzyme activity were studied.The results showed that continuous cropping resulting the enrichment of nitrogen and deficiency of available potassium in soil ,after 5 years of continuous cropping,the soil total nitrogen content increased by 30.99%,but available potassium content was decreased by 47.26%,available phosphorus content was remained stable.The activities of catalase increased slowly with the time of continuous cropping increasing,but the activities of urease and phosphatase decreased 31.25% and 31.54% respectively,these descending trends were disadvantageous to the absorption and utilization of nitrogen and phosphorus in crops.
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备注/Memo
收稿日期：2016-04-12