不同堆沤方式对蚕沙部分理化指标动态变化的影响

采用开放式和封闭式2种方式进行蚕沙堆沤，测定了堆沤过程中蚕沙各理化指标（含水率、温度、pH、有机碳、氮、磷、钾、腐殖酸以及发芽指数）的动态变化．结果表明：50 d的堆沤进程中，封闭式堆沤发酵温度低、发酵速度慢，各时期理化指标变化平稳；开放式堆沤经历2次升温期，第1次温度高（50℃以上持续9 d），第2次温度低，温度对各个时期理化指标的波动造成较大影响；蚕沙经过20 d的开放式堆沤可基本达到有机肥的技术标准，蚕沙有机碳质量分数为352.41 g/kg，w（C）/w（N）为11.01，总养分（N＋P2O5＋K2O）质量分数为81.2 g/kg， pH 7.14，发芽指数＞50％．...

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Published in华南农业大学学报 Vol. 34; no. 4; pp. 598 - 601
Main Author 陈芳艳 钟杨生 李文楚 王叶元 马冲 林健荣
Format Journal Article
LanguageChinese
Published 华南农业大学动物科学学院,广东广州,510642 2013
Subjects
堆沤
理化指标
蚕沙
理化指标
蚕沙
堆沤
compost
physical and chemical index
silkworm excrement
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Summary:采用开放式和封闭式2种方式进行蚕沙堆沤，测定了堆沤过程中蚕沙各理化指标（含水率、温度、pH、有机碳、氮、磷、钾、腐殖酸以及发芽指数）的动态变化．结果表明：50 d的堆沤进程中，封闭式堆沤发酵温度低、发酵速度慢，各时期理化指标变化平稳；开放式堆沤经历2次升温期，第1次温度高（50℃以上持续9 d），第2次温度低，温度对各个时期理化指标的波动造成较大影响；蚕沙经过20 d的开放式堆沤可基本达到有机肥的技术标准，蚕沙有机碳质量分数为352.41 g/kg，w（C）/w（N）为11.01，总养分（N＋P2O5＋K2O）质量分数为81.2 g/kg， pH 7.14，发芽指数＞50％．
Bibliography:silkworm excrement; compost; physical and chemical index
Changes of partial physical and chemical indexes , including moisture percentage , temperature , pH, organic carbon, nitrogen, phosphorus, potassium, humus acid, germination index of silkworm ex-crement composted in open stockpile and close stockpile during different periods , were studied .The re-sults showed that when the fermentation temperature was low , fermentaion rate was slow , but physical and chemical index were stable in close stockpile while there were two heating up periods in open stockpile , the first high temperature was 50℃for 9 d, the second with low temperature , which created great effects on physical and chemical indexes .It basically reached the technical standards of organic fertilizer after 20 d open compost .The content of organic carbon in silkworm paeces dropping ran up to 352.41 g/kg, w（C）/w（N） being 11.01, the total nutrient content （N＋P2O5 ＋K2O） being 81.2 g/kg, pH being 7.14 , germination index surpassing 50%.
44-1110/S
CHEN
ISSN:1001-411X