KUANG En-jun,CHI Feng-qin,SU Qing-rui,et al.Decomposition Regularity of Different Material in Sand Strainer Tube[J].HEILONGJIANG AGRICULTURAL SCIENCES,2010,(04):45-48.
砂滤管条件下不同有机物料的分解规律
- Title:
- Decomposition Regularity of Different Material in Sand Strainer Tube
- 文章编号:
- 1002-2767(2010)04-0000-02
- Keywords:
- different material; decomposition regularity; C/N
- 文献标志码:
- A
- 摘要:
- 采用砂滤管法研究不同有机物料中有机碳及氮、磷、钾分解规律。结果表明:不同有机物料中有机碳在埋管初期分解较快,后期分解较慢,分解趋势为玉米秸秆>大豆秸秆>玉米根茬>大豆根茬;经过150 d的分解,氮、磷、钾有79.9%~90.2%、93.7%~99.0%、50.6%~78.4%被释放出来。与不调节C/N相比较,各有机物料调节C/N后有机碳分解速率加快,玉米秸秆、玉米根茬、大豆秸秆、大豆根茬平均提高22.8%、19.4%、13.9%、18.7%,尤其埋管后45 d,调节C/N能明显提高秸秆的分解速度。经过150 d的分解,有72.3%~78.1%的氮被释放出来,磷素有90%左右被释放,C/N的调节对钾素影响不大。
- Abstract:
- Sand strainer tube method was used to determine decomposition regularity of different organic material of organic C and N, P, K. The results show that organic C decomposition rate of different organic material were faster at the beginning of buried tubes, and slower at the later. The trend of organic C decomposition rate was corn stalk>soybean stalk>corn root stubble>soybean root stubble. After 150 days, N, P and K release rate were 79.9%~90.2%、93.7%~99.0%、50.6%~78.4%. Compared with no adjusting C/N , adjusting C/N accelerates organic C decomposition rate of various organic materials, Corn stalk, corn root stubble, soybean stalk, soybean root average of 22.8%, 19.4%, 13.9%, 18.7%, decomposition rate had obviously improved especially 45 days after embedding. And N was decomposed 72.3%~78.1%, P was about 90%, but K has not obvious influence.
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备注/Memo
基金项目:“十一五”国家科技支撑计划资助项目(2007BAD89B05,2006BAD05B05)