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- Title
粪肥替代对稻田土壤氮素,有机质含量及水稻产量的影响.
- Authors
吴茜虞; 续勇波; 雷宝坤; 李孙宁; 徐卓颖
- Abstract
[Objective] The effects of total replacement of chemical fertilizer with pig manure, cattle manure and chicken manure on nitrogen and organic matter contents in paddy soil and rice yield were investigated in paddy field. [ Method] The rice field experiment was conducted in Gusheng village, Dali city, Yunnan province, with the principle of equal nitrogen full substitution. A total of 5 treatments were set up for the experiment. CKl was the non-fertilizer control, CK2 was the chemical fertilizer control, Tl was pig manure total fertilizer substitution treatment, T2 was cow manure total fertilizer substitution treatment, and T3 was chicken manure total fertilizer substitution treatment. [ Result] Compared with CK2, Tl and T3 treatments significantly increased the soil total nitrogen content by 4. 89% and 3. 83%. Compared with single fertilizer application, the content of ammonium nitrogen in soil of total manure substitution treatment decreased by 19. 36% - 29. 18%, and the content of nitrate nitrogen in soil showed opposite results, and T3 > T2 > Tl > CK2, indicating that total manure substitution treatment increased the risk of soil nitrogen leaching. The three manure substitution treatments could significantly increase soil organic matter content compared with the single fertilizer treatment, and it increased with the increase of C/N ratio of manure, and the increase range was 37. 52 % to 85. 98 % . The order of rice yield was T3 ( 10 399. 92 kg/hm2 ) > CK2 ( 9690. 85 kg/hm2 ) > Tl ( 9512. 39 kg/hm2 ) > T2 (8241. 55 kg/hm2 ) > CK! (7985. 96 kg/hm2 ). Compared with CK2 treatment, T2 treatment significantly reduced rice yield by 14. 96%, and Tl and T3 treatment had no significant difference in rice yield compared with CK2 treatment. There was no significant difference in rice yield composition between the total manure substitution treatments and the CK2 treatment. Tl and T3 handling the amounts of accumulated nitrogen of rice plants and nitrogen absorption efficiency than CK2 treatment had no significant difference. [ Conclusion] Comprehensive fertilizer input cost, pig manure replacement treatment can increase the soil total nitrogen (TN) and organic matter ( SOM) content under the premise of stable yield, that is, stable yield can improve the soil fertilizer supply capacity. Compared with the total replacement treatment of chicken manure, pig manure reduces the risk of nitrogen leaching loss, and is a better alternative manure type for the total substitution of chemical fertilizer.
- Subjects
PADDY fields; NITROGEN in soils; MANURES; ORGANIC compounds
- Publication
Southwest China Journal of Agricultural Sciences, 2023, Vol 36, Issue 10, p2217
- ISSN
1001-4829
- Publication type
Article
- DOI
10.16213/j.cnki.scjas.2023.10.018