预处理秸秆对土壤蒸发及秸秆分解率的影响

被引:7
作者
王增丽 [1 ,2 ]
王珍 [1 ]
冯浩 [1 ,3 ]
机构
[1] 西北农林科技大学中国旱区节水农业研究院
[2] 甘肃省武威市水利技术综合服务中心
[3] 中国科学院水利部水土保持研究所
关键词
秸秆; 粉碎; 氨化; 累积蒸发量; 蒸发失水比; 秸秆分解率;
D O I
暂无
中图分类号
S152.7 [土壤水分];
学科分类号
摘要
通过室内土柱模拟培养试验,对比研究了秸秆粉碎、氨化及与无机土壤改良剂混合配施后对土壤蒸发特性及秸秆分解速率的影响.结果表明:秸秆施入土壤后明显提高了土壤的累积蒸发量,粉碎氨化秸秆具有降低累积蒸发量的作用,其与无机土壤改良剂混合配施后,降低土壤蒸发强度作用显著,提高了土壤的耐旱性.长秸秆和粉碎秸秆单独施入土壤后明显提高了土壤的蒸发失水比,粉碎氨化秸秆能持续降低土壤的蒸发失水比,当其与土壤改良剂混合后抑制土壤无效蒸发作用周期延长.秸秆施入土壤后的分解高峰主要发生在30 d内.短期内秸秆粉碎程度对其分解速率作用不明显,粉碎氨化秸秆提高秸秆分解率效果显著.土壤耗水特征各指标累积蒸发量E c、蒸发速率a·b、蒸发失水比pwl各指标之间相关关系具有统计学意义,能较好地表征土壤蒸发特性.
引用
收藏
页码:816 / 821
页数:6
相关论文
共 20 条
[1]   玉米秸秆覆盖对麦田土壤温度和土壤蒸发的影响 [J].
陈素英 ;
张喜英 ;
裴冬 ;
孙宏勇 .
农业工程学报, 2005, (10) :171-173
[2]   玉米秸秆分解期间土壤中有机碳数量的动态变化研究 [J].
张晋京 ;
窦森 ;
江源 ;
李翠兰 ;
平立凤 .
吉林农业大学学报, 2000, (03) :67-72
[3]   麦草覆盖与地膜覆盖对旱地可持续利用的影响 [J].
薛少平 ;
朱琳 ;
姚万生 ;
韩文霆 .
农业工程学报, 2002, (06) :71-73
[4]  
Effect of straw mulch on evaporation reduction in relation to rates of mulchingand evaporativity. Jalota S,Prihar S. Journal of the Indian Society of Soil Science . 1990
[5]  
Evaporation from soil in relation to residue rate, mixing depth, soil texture and evaporativity[J] . B.S. Gill,S.K. Jalota. &nbspSoil Technology . 1996 (4)
[6]  
Effect of mulch, irrigation, and soil type on water use and yield of maize[J] . J.A Tolk,T.A Howell,S.R Evett. &nbspSoil & Tillage Research . 1999 (2)
[7]  
The effect of straw management and reduced tillage on soil properties and crop yields of spring-sown cereals on two loam soils in Norway[J] .  &nbspSoil & Tillage Research . 1999 (1)
[8]  
Structural stability and carbohydrate contents of an ultisol under different management systems[J] . J.K Adesodun,J.S.C Mbagwu,N Oti. &nbspSoil & Tillage Research . 2001 (3)
[9]  
Decomposition of maize straw in three European soils as revealed by DRIFT spectra of soil particle fractions[J] . R Spaccini,A Piccolo,G Haberhauer,M Stemmer,M.H Gerzabek. &nbspGeoderma . 2001 (3)
[10]  
Effects of straw, vegetable oil and whey on physical and microbiological properties of a chernozem[J] . Renate Sonnleitner,Eberhard Lorbeer,Franz Schinner. &nbspApplied Soil Ecology . 2002 (3)