关键词：
橡胶籽油枯;锯末;磷石膏;堆肥;养分变化
摘 要：
试验采用橡胶籽油枯、锯末和磷石膏为基本堆肥原料,根据m(橡胶籽油枯)∶m(锯末)∶m(磷石膏)设置3个处理(处理1:20∶7∶10,处理2:30∶60∶10,处理3:40∶50∶10)研究了堆肥过程中的温度、水分、pH值、C/N比、全氮、磷、钾的变化来说明不同橡胶籽油枯、锯末配比和磷石膏联合堆肥过程。结果表明:高配比的橡胶籽油枯添加量可以增加堆肥高温持续时间,加快堆肥水分下降速度,加快堆肥的腐熟进程。添加10%(质量分数)磷石膏,橡胶籽油枯和锯末联合堆肥结束后,pH稳定在6.0~6.5之间。处理2和处理3的全氮、全磷的含量显著高于处理1的全氮和全磷的含量(P<0.05),而处理2和处理3之间没有显著差异(P>0.05),处理1,2,3处理间全钾的含量没有显著的差异(P>0.05)。
译 名：
Study on Co-composting Process of Rubber Seed Oil Cake,Sawdust and Phosphogypsum
作 者：
FAN Maopan;TANG Li;XU Zhi;RUAN Guangxiao;College of Resources and Environment,Yunnan Agricultural University;
关键词：
rubber seed oil cake;;sawdust;;phosphogypsum;;co-composting;;nutrient changes
摘 要：
Rubber seed oil cake,sawdust and phosphogypsum were as the basic composting raw materials at this experiment. Three treatments( treatment 1 : 20 % rubber seed oil cake + 70 %sawdust + 10 % phosphogypsum,treatment 2 : 30 % rubber seed oil cake + 60 % sawdust +10 % phosphogypsum,treatment 3 : 40 % rubber seed oil cake + 50 % sawdust + 10 % Phosphogypsum) were designed,and the changes of temperature,moisture content,pH,C/N ratio,total nitrogen,total phosphorus,and total potassium were studied to illustrate co-composting process of the different combination of rubber seed oil cake, sawdust and phosphogypsum. The results showed that a higher ratio of rubber seed oil cake dosage could increased high temperature duration、decreased moisture content,and improved composting process after the end of the composting. After adding 10 %( mass fraction) phosphogypsum,the pH of composting stabilized at between 6. 0 and 6. 5. Total nitrogen,total phosphorus content of treatment 2 and treatment 3 were significantly higher than that of treatment 1,while there were no significant differences between treatment 2 and treatment 3,there were no significant differences of total potassium among treatment 1,treatment 2 and treatment 3.
