江苏农业学报2025，Vol.41Issue(2)：276-285,10.DOI:10.3969/j.issn.1000-4440.2025.02.008
普通尿素与控释尿素配比一次性施肥对稻麦产量及氮素利用率的影响
Effects of one-off fertilization with common urea and controlled release urea at a certain ratio on yield and nitrogen use efficiency of rice and wheat
摘要
Abstract
To provide a basis for the scientific application of fertilizers in the rice-wheat rotation system of the Lixiahe area in Jiangsu province,a study was conducted on the effects of one-off fertilization with common urea and controlled-release urea at a certain ratio on the yield and nitrogen use efficiency of rice and wheat.The study utilized the varieties Ningmai 13 and Nanjing 9108 in a three-year field trial of rice-wheat rota-tion in Gaoyou City,Jiangsu province.A control treatment without nitrogen fertilizer(CK)was established,along with a W0 treatment(100%common urea,with 50%as the basal dressing and 50%as the top dressing).Treatments with con-trolled-release urea substituting for common urea at different ratios in a single basal application were set up(W3 treatment,70%common urea+30%controlled-release urea;W5 treatment,50%common urea+50%controlled-release urea;W7 treatment,30%common urea+70%controlled-release urea;W10 treatment,100%controlled-release urea).Additionally,a 20%nitrogen reduction treatment(WJ7)was set up based on the W7 treatment.The results indicated that the combined application of common urea and controlled-release urea significantly enhanced both the yield and nitrogen use efficiency of rice and wheat.The highest yields of rice and wheat were 8.26 t/hm2 and 6.09 t/hm2,respectively,which were 18.3%and 34.4%higher than those of con-ventional fertilization treatment(W0).In addition,the average nitrogen use efficiency of wheat treated with W10 was the highest in three years,which was 47.5%.The average nitrogen use efficiency of rice treated with W7 was the highest in three years,which was 45.6%.Under the simplified co-application of common urea and controlled-release urea,reducing nitrogen by 20%did not significantly affect the yield and nitrogen use efficiency of rice and wheat,but it did decrease the nitrogen accumulation in the plants.The combined application of common urea and controlled-release urea increased the total nitrogen content and organic matter content in the soil,and the total nitrogen content and organic matter content showed an overall increasing trend over the three-year experimental period.Based on these findings,for the rice-wheat rotation system in the Lixiahe area of Jiangsu province,a suitable ratio of controlled-release urea is suggested to be 70%for rice and between 70%and 100%for wheat.关键词
稻麦/控释尿素/简化配施/产量/氮素利用率Key words
rice and wheat/controlled release urea/simplified application/yield/nitrogen use efficiency分类
农业科技引用本文复制引用
贺平,柏彦超,陈玮峰,蔡健,郁洁,张丽,陈雅玲,李云龙,左文刚,单玉华..普通尿素与控释尿素配比一次性施肥对稻麦产量及氮素利用率的影响[J].江苏农业学报,2025,41(2):276-285,10.基金项目
江苏现代农业(水稻、蔬菜)产业技术体系项目[JATS(2023)318、JATS(2023)317] （水稻、蔬菜）
