We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
氮肥减施对滴灌棉田 NH<sub>3</sub> 挥发及 棉花养分吸收和产量的影响.
- Authors
王方斌; 刘 凯; 孙嘉†m; 殷 星; 侯振安
- Abstract
[Objective] A field experiment was conducted to evaluate the nitrogen fertilizer reduction on NH3 volatilization, nutrient use and cotton yield in drip - irrigated cotton field. [Methods] The experiment consisted of 5 fertilization treatments: control (no N fertilization, CK), farmer conventional fertilization (300 kg/hm², T300), conventional fertilization N reduced by 20% (240 kg/hm², T240), acid liquid fertilizer N reduced by 20% (240 kg/hm², L240), acid liquid fertilizer N reduced by 35% (200 kg/hm², L200). [Result] The volatilization loss of soil NH3 in nitrogen reduction treatment (T240, L240, L200) was 31. 1%, 73. 4% and 78. 8% lower than that in T300 treatment, respectively. At the same N application level, NH3 volatilization accumulation in L240 treatment was 61. 4% lower than that in T240 treatment. The nitrogen uptake of T240 and L240 treatments was significantly better than that of T300 treatment, which increased by 9.1% and 12. 6%, respectively, compared with T300 treatment. The phosphorus uptake of cotton treated with L240 was the highest in each treatment, which was 11. 7% - 17. 7% higher than those of other treatments. The yields of cotton in T240 and L240 treatments were significantly higher than that in the T300 treatment, which increased by 9. 6% and 12. 6%, respectively. Compared with T300 treatment, each nitrogen reduction treatment improved the nitrogen fertilizer utilization rate of cotton, in which the apparent nitrogen fertilizer utilization rate increased by 20. 1% to 24. 9%.[Conclusion] Acid liquid fertilizer N reduced by 20% significantly reduced NH3 volatilization loss, promoted nitrogen and phosphorus uptake in cotton and increased cotton yield and fertilizer use efficiency.
- Subjects
NITROGEN reduction; NUTRIENT uptake; COTTON yields; PHOSPHORUS; LIQUID fertilizers
- Publication
Xinjiang Agricultural Sciences, 2020, Vol 57, Issue 9, p1746
- ISSN
1001-4330
- Publication type
Article
- DOI
10.6048/j.issn.1001-4330.2020.09.020