Nguyễn Thu Hà1, Nguyễn Văn Thao1, Nguyễn Thị Lan Anh1
 Khoa Quản lý Đất đai, Học viện Nông nghiệp Việt Nam
Từ khóa: hợp chất hữu cơ, ủ phân, phân hữu cơ, trùn quế, Perionyx excavatus
Changes of organic nitrogen forms during the composting process with the presence of Perionyx excavatus
Nguyen Thu Ha, Nguyen Van Thao, Nguyen Thi Lan Anh
The study aiming at investigating the changes of organic Nitrogen forms during the composting process with the presence of Perionyx excavatus. Organic fertilizers were collected from two plots of different types of management: ĐC plot (composting of rice straw and cow dung) and ĐU plot (composting of rice straw and cow dung with the presence of Perionyx excavatus). During the composting process, content of mineral N and NAA compound increased in the early stages (13 and 32 days after starting) and then decreased; the amount of NAM increased and maintained stability while NAS steadily increased. The presence of Perionyx excavatus makes significantly increasing the amount of total N (Nts) and hydrolyzable N (Ntp) (1.91 and 2.27 times, respectively). The contents of mineral Nitrogen and all organic Nitrogen forms including NAM, NAS, NAA, NUK were also remarkably enlarged. The results indicated that Perionyx excavatus is an amazing biological factor for the decomposition of organic N compound.
Keywords: Organic nitrogen, composting, perionyx excavatus.
Người phản biện: PGS.TS. Nguyễn Thị Dần
Ngày nhận bài: 10/7/2016
Ngày thông qua phản biện: 27/7/2016
Ngày duyệt đăng: 05/8/2016