摘要
[目的]弄清不同榨菜品种的最佳施氮量和氮效率差异。[方法]以榨菜品种涪杂2号和永安小叶为试材,通过田间试验研究不同氮肥用量（01、503、004、50 kg/hm2）对2个榨菜品种产量和氮素吸收利用的影响。[结果]永安小叶和涪杂2号对氮肥的响应存在显著差异,永安小叶对低氮的适应能力和对高氮的忍耐能力比涪杂2号强;不施氮和高量施氮（450 kg/hm2）处理使永安小叶的生物学产量均显著高于涪杂2号。永安小叶对氮素的吸收能力比涪杂2号强,平均多吸收N 18.6 kg/hm2;涪杂2号对钾的吸收能力比永安小叶强,平均多吸收K 12 kg/hm2;二者对磷的吸收能力相当。在一定的施氮水平下,榨菜产量随氮肥用量的增加而增加。[结论]该试验条件下的最佳施氮量,涪杂2号为255~315 kg/hm2,永安小叶为285~360 kg/hm2。
[Objective] The study aimed to make clear the optimum N fertilizer rate and N efficiency difference for different varieties of tuber mustard.[Method] In the field test,with 2 tuber mustard varieties of Fuza 2 and Yonganxiaoye as the materials,the effect of different N fertilizer rates（0,150,300,450 kg/hm2）on the yield and N absorption and utilization of 2 tuber mustard varieties.[Result] The response of Fuza 2 and Yonganxiaoye to N fertilizer showed a significant difference.The adaptability of Yonganxiaoye to low N and its endurance to high N were stronger than that of Fuza 2.In the treatments without N application and with high N application（450 kg/hm2）,the biologic yield of Yonganxiaoye was obviously higher than that of Fuza 2.The N absorption ability of Yonganxiaoye was stronger,absorbing N 18.6 kg/hm2 more than that of Fuza 2 on average.The K absorption ability of Fuza 2 was stronger,absorbing K 12 kg/hm2 more than that of Yonganxiaoye on average.The P absorption ability of 2 varieties was equal.Under some N application level,the yield of tuber mustard was increased along with the increment of N fertilizer rate.[Conclusion] Under this test condition,the optimum N fertilizer rates for Fuza 2 and Yonganxiaoye were 255-315 kg/hm2 and 285-360 kg/hm2 reap.
出处
《安徽农业科学》
CAS
北大核心
2009年第1期237-238,298,共3页
Journal of Anhui Agricultural Sciences
基金
国家科技支撑计划(2006BAD10B08)
公益性行业科研专项(200803030)
关键词
氮
榨菜
产量
Nitrogen
Tuber mustard
Yield
