摘要
土壤水分状况是决定秸秆分解速度的一个重要因素,但目前在西北地区仍无量化指标。本研究采用培养试验,对秸秆在土壤进行分解时所需水分进行研究测定。结果表明,秸秆的分解率与土壤含水量呈正相关,秸秆分解时的土壤水分适宜区间为15％～22.5％;而秸秆不能分解时的土壤水分临界值为15％。
The soil water condition was an important factor for straw decomposing,but till now there is no reference data in northwest region. The study determined the effect of soil water on straw decomposing, the results indicated that; (1)straw decomposing was positive correlation with soil water content ;(2)the optimum soil water content was 15%-22. 5%; (3)when soil water content was below 15%,straw couldn't decomposed,and that might be water critical value.
出处
《西北农业学报》
CAS
CSCD
2003年第3期73-75,共3页
Acta Agriculturae Boreali-occidentalis Sinica
关键词
秸秆分解
土壤
水分区间
临界值
Straw decomposing
Soil water content
Critical value
