摘要
通过田间试验,按尿素种类和施肥量共设7个处理,研究控释尿素对大豆农艺性状、含氮量及产量的影响。结果表明:与普通尿素相比,多肽尿素、长效缓释尿素、大颗粒尿素、硫包衣尿素提高了大豆干物质、氮素积累量、氮肥利用率及产量。多肽尿素、长效缓释尿素低氮处理对大豆干物质、氮素积累量、氮肥利用率的影响最为明显,鼓粒期干物质量分别比普通尿素提高了11.1,18.1 g,氮素积累总量比普通尿素增加了0.83±1.11 g·m-2,氮肥利用率比普通尿素增加了10.73%和15.16%;多肽尿素高氮量处理、长效缓释尿素低氮处理对大豆的增产效果最为显著,分别比普通尿素增加9.5%和11.0%。
A field experiment with 7 treatments of different types of urea and several nitrogen rates was conducted to study the effects of controlled-release urea on soybean agronomic characteristics, nitrogen contents and seed yield. Polypeptide urea （PU）, long-acting sustain-released urea（ LSU）, large granule urea and sulfur-coated urea improved the dry matter, nitrogen accumulation, nitrogen use efficiency （NUE） and seed yield compared to the common urea. The treatments of 60 kg· ha-1 PU and LSU increased dry matter, total accumulated nitrogen and NUE obviously, and at the pod filling stage, the three indexes increased by 11. 1 and 18. 1 g·m-2, 0.83 and 1. 11 g· m-2, 10.73% and 15. 16% , respectively. The treatments of 75 kg·ha-1 PU and 60 kg·ha-1 LSU had best yield-increasing effect, and seed yield increased by 9.5% and 11.0%, respectively.
出处
《大豆科学》
CAS
CSCD
北大核心
2013年第5期655-658,共4页
Soybean Science
基金
黑龙江省科技厅指导项目(GC12B104)
黑龙江省回国基金项目(LC201021)
东北农业大学与农垦浩良河肥厂合作项目(2012)
中科院对外合作重点项目(HTST07)
关键词
大豆
尿素
氮素积累
氮肥利用率
Soybean
Urea
Nitrogen accumulation
Nitrogen use efficiency
