TẠP CHÍ KHOA HỌC XÃ HỘI, NHÂN VĂN VÀ GIÁO DỤC TẬP 2, SỐ 2 (2012)
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TÀI LIỆU THAM KHẢO
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STUDY OF THE EFFECT OF RATIO C:N ON INCUBATION TIME AND
QUALITY OF COMPOST PROCESS FROM AGRICULTURAL BY-PRODUCTS
Bui Thi Tho , Vo Chau Tuan
The University of Danang – University of Science and Education
ABSTRACT
The initial ratio C: N in materials has an important impact on the quality of compost. In
this paper, we have studied the effect of ratio C: N at the levels of 20:1, 30:1, 40:1 and 50:1 on
the speed and quality of compost with materials: water hyacinth, straw and manure. The results
of the experiments show that the ratio C: N in materials at 30:1 is the most appropriate to
increase speed and improve the quality of compost. Incubation time was shortened to 45 days.
The temperature reached 68.6
o
C after 15
days of incubation, final pH reached 7.45, EC
eventually reached 5.45 dS/m. There was a rich level of Humus content of 16.7%. The total
protein content reached 1.8%, the total potassium reached 1.25% and total phosphate reached
0.48%. The above criteria are appropriate when they are used as fertilizer for agricultural land.
Keywords: Water hyacinth, compost, straw, C:N ratio, microorganism
*
ThS. Bùi Thị Thơ, email: buithonh39@gmail.com, Trường ĐHSP – ĐHĐN
ThS. Võ Châu Tuấn, email: vochautuan@gmail.com, Trường ĐHSP – ĐHĐN