GE Nan,CUI Xiangxin,HAN Yanlong,et al.Soil Respiration of Grassland Under Condition of Human Disturbance[J].Northern Horticulture,2016,40(12):179-182.[doi:10.11937/bfyy.201612044]
几种物质对蓝莓土壤pH及有效N、P、K的影响
- Title:
- Soil Respiration of Grassland Under Condition of Human Disturbance
- Keywords:
- soil respiration; soil temperature and moisture; correlation mode; Xilin River Basin grassland
- 文献标志码:
- A
- 摘要:
- 以4年生盆栽“灿烂”兔眼蓝莓为试材，研究了硫磺、硫酸钾和食用醋对土壤pH及有效N、P、K含量的影响。结果表明：在土壤中施入一定量的硫磺、硫酸钾和食用醋后，能显著降低土壤pH，增加土壤有效N、P、K含量。其中食用醋能迅速降低土壤pH至蓝莓生长最适的4.0~4.8范围，硫磺也能调整土壤pH至4.0~4.8，但改良效果较食用醋慢，3种物质中硫酸钾改良土壤pH的效果最差，同时土壤中有效N、P、K含量随pH降低而增加。综合分析表明，食用醋是一种见效快，易于施用的土壤pH改良物质。
- Abstract:
- Dynamic soil respiration in different slope positions was measured by ADC soil respiration apparatus in runoff plots and natural grazing pasture of Xilin River Basin.The effects of human disturbance on soil respiration in typical steppe runoff plots were studied.The results showed that the diurnal variation of soil respiration and temperature could be expressed as a single peak curve and its highest occurred between 13:00 pm and 14:30 pm.The mean soil respiration rate was significant higher in top position of runoff plots(2.61±0.80)μmol?m-2?s-1 than that in bottom(1.51±0.32)μmol?m-2?s-1,or the top of natural grazing pasture(1.31±0.68)μmol?m-2?s-1 and the bottom position(0.75±0.25)μmol?m-2?s-1.The relationship between soil respiration and soil temperature was well explained by single variable model.The R2 values were 0.76,0.78,0.87 and 0.70,respectively.The Q10 values were 1.68,1.59,2.17 and 1.91,respectively.Two variable model of soil temperature and moisture could better express the influence of water heating factor on soil respiration,R2 value could reach 0.82-0.89,which provided a guiding role for the study of the relationship between soil respiration and soil water thermal factor.
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备注/Memo
第一作者简介：付燕（1982-），女，硕士，副教授，研究方向为生物技术在园艺植物上的应用。E-mail：fuyanloquat@126.com.基金项目：黔东南州科技计划资助项目（黔东南科合J字[2014]4005）；贵州省教育厅“125计划”重大科技专项资助项目（黔教合重大专项字[2013]028）。