Bio:
Email: qiaojiale2199@163.com
乔佳乐(1998—),男,硕士,主要从事土壤养分管理研究;qiaojiale2199@163.com
为实现春玉米的高效生产,开展了施用不同养分释放期控释氮肥的田间试验。试验设置不施氮肥(CK)、普通氮肥(T1)以及养分释放期分别为30、60、90、120 d的控释氮肥(T2~T5)等6个处理,考察了不同处理对玉米生长、产量、氮素利用效率、土壤理化性状等指标的影响。结果表明:施用控释氮肥能够促进玉米生长,延缓植株衰老,提高玉米产量和氮素利用效率并改善土壤条件;T4处理的玉米产量和品质、氮素利用效率、土壤理化性状等综合表现较理想。养分释放期为90 d的控释氮肥能够满足春玉米在不同生育时期对氮素的需求,可实现吉林地区春玉米的高效生产。
To achieve efficient production of spring maize, a field experiment is applied on the application of controlled-release nitrogen fertilizers with different nutrient release periods. The experiment includes six treatments: no nitrogen fertilizer (CK), regular nitrogen fertilizer (T1), and controlled-release nitrogen fertilizers with nutrient release periods of 30, 60, 90, and 120 days (T2-T5), respectively. The effects of different treatments on maize growth, yield, nitrogen use efficiency, and soil physical and chemical properties are investigated. The results indicate that the application of controlled-release nitrogen fertilizer promotes maize growth, delays plant senescence, increases maize yield and nitrogen use efficiency, and improves soil conditions. The T4 treatment shows relatively ideal overall performance in terms of maize yield and quality, nitrogen use efficiency, and soil physical and chemical properties. Controlled-release nitrogen fertilizer with a 90-day nutrient release period can meet the nitrogen demand of spring maize at different growth stages and can achieve efficient spring maize production in the Jilin region.
ZHANG W S, LIANG Z Y, HE X M, et al. The effects of controlled release urea on maize productivity and reactive nitrogen losses: a meta-analysis[J]. Environmental Pollution, 2019, 246: 559-565. doi:10.1016/j.envpol.2018.12.059
GUO Y Q, MA Z T, REN B Z, et al. Effects of humic acid added to controlled-release fertilizer on summer maize yield, nitrogen use efficiency and greenhouse gas emission[J]. Agriculture, 2022, 12(4): 448. doi:10.3390/agriculture12040448