[Ammonia volatilization and nitrogen use efficiency in the field of fresh edible maize as affec-ted by different band fertilization depths of controlled-release urea]

Autor: Wei, Liu, Jian Xiong, Zhou, Yuan Yuan, Xie, Xin Xin, Xue, Han Feng, Xiong, Fang Sen, Xu, Jia Fu, Yuan, You Sheng, Xiong
Rok vydání: 2019
Předmět:
Zdroj: Ying yong sheng tai xue bao = The journal of applied ecology. 30(4)
ISSN: 1001-9332
Popis: A field experiment was conducted to examine the effects of controlled-release urea (CRU) application on ammonia (NH为提高鲜食玉米一次性施肥的氮肥利用率并降低氮肥的环境影响,通过田间试验,以不施氮处理为对照(CK),研究了控释尿素不同条施深度(0、5、10、15、20 cm)对鲜食玉米田间土壤氨挥发特征、鲜穗产量和氮肥利用率的影响. 结果表明: 玉米种植带和宽行非施肥带的土壤氨挥发主要发生在施肥后的前2周,而窄行施肥带的土壤氨挥发在施肥后持续约1个月. 与CK相比,控释尿素表施(0 cm)处理不仅大幅度地提高了窄行施肥带的氨挥发损失量,同时也显著增加了玉米种植带和宽行非施肥带的氨挥发损失量. 不同深度施肥处理全生育期土壤氨挥发损失总量差异较大,为3.1~25.5 kg N·hm
Databáze: OpenAIRE