施氮条件下不同株型水稻的土壤氨化强度和氮肥利用率研究
Study on Soil Ammonification Intensity and Nitrogen Fertilizer Utilization Efficiency between Different Plant Type Rice under Several Nitrogen Levels
王柏秋 1全革 1刘中卓 1吕小红1
作者信息
- 1. 辽宁省盐碱地利用研究所,辽宁 盘锦 124010
- 折叠
摘要
以穗型直立的紧凑型水稻品种沈农07425和穗型弯曲的松散型水稻品种秋光为材料,在不同氮素水平下研究两种株型水稻品种的土壤氨化强度和氮肥利用率.结果表明,沈农07425施氮处理的土壤氨化强度随生育进程的推进表现为上升趋势,松散型秋光施氮处理的土壤氨化强度随生育进程的推进表现为下降趋势,但两品种间土壤氨化强度均呈现N1＞N2＞N3的关系.沈农07425的氮肥农学利用率遵循N1＞N2＞N3的趋势,秋光N2处理的氮肥农学利用率最大.土壤氨化强度受品种株型、施氮水平及二者交互作用共同影响.为减少氮素氨化损失,建议不同株型水稻品种采取相应追氮模式,紧凑型沈农07425适宜低氮、氮肥早施,而松散型秋光中氮、氮肥晚施.
Abstract
The soil ammonification intensity of Shennong-07425 under the nitrogen application treatments showed an upward trend with the advancement of growth process,while that of loose Akihikari showed a downward trend.However,the soil ammonification intensity between the two varieties showed a relationship of N1＞N2＞N3.The nitrogen agronomy efficiency of Shennong-07425 followed a trend of N1＞N2＞N3,and Akihikari get its highest nitrogen agronomy efficiency under N2 treatment.The soil ammonification intensity was influenced by the variety,nitrogen application and their interaction.To reduce nitrogen ammoniation loss,it is recommended to adopt corresponding nitrogen application modes for different plant types of rice varieties.The compact type Shennong-07425 is suitable for early application of low nitrogen,while the loose type Akihikari is suitable for late application of medium nitrogen.
关键词
氮/株型/氨化强度/氮肥农学利用率Key words
Nitrogen/Plant type/Ammonifying intensity/Nitrogen agronomy efficiency引用本文复制引用
基金项目
辽宁省博士科研启动基金(20141169)
辽宁省科技厅重大攻关项目(2008201002)
出版年
2023
NETL
NSTL
维普
万方数据