摘要
在田间条件下,以花育36号为供试品种,设置不施氮肥(N0)和施纯氮75(N1)、112.5(N2)、150kg/hm^2(N3) 4个施氮量水平,研究氮肥用量对花生光合产物积累及氮肥利用率的影响。结果表明,花生营养器官干物质积累量在结荚期达峰值,荚果干物质积累量随生育期的推进而增加。与N0相比,N1处理荚果最大生长速率出现时间滞后7.91 d,N2处理则提前4.87 d;N1、N2和N3处理产量分别提高13.48%、7.80%和13.83%,N1与N3处理无显著差异;单株果数分别增加15.99%、17.79%和17.37%。N1处理氮肥利用率显著高于N3处理。综合考虑花生产量和氮肥利用率,本试验条件下适宜施氮量为75 kg/hm^2。
Under the field conditions,Huayu 36 was used as the test variety,and four nitrogen application levels of no nitrogen( N0),75 kg/hm^2( N1),112.5 kg/hm^2( N2) and 150 kg/hm^2( N3) of pure nitrogen were set to study the effects of different nitrogen application rates on accumulation of photosynthetic products and nitrogen use efficiency of peanut.The results showed that the dry matter accumulation in the vegetative organs of peanut reached the maximum value at the podding stage,and the dry matter accumulation in pods increased with the extension of growth period.Compared with N0 treatment,the time of maximum growth rate of pods appeared 7.91 days later under N1 treatment but 4.87 days earlier under N2 treatment.Compared with N0 treatment,the yield of N1,N2 and N3 treatment increased by 13.48%,7.80% and 13.83%,respectively,and there was no significant difference between N1 and N3 treatment.The number of pods per plant increased by 15.99%,17.79% and 17.37%,respectively.The nitrogen use efficiency of N1 treatment was significantly higher than that of N3 treatment.Considering yield and nitrogen use efficiency of peanut,the suitable nitrogen application rate was 75 kg/hm^2.
作者
江晨
张智猛
孟爱芝
姜常松
丁红
Jiang Chen;Zhang Zhimeng;Meng Aizhi;Jiang Changsong;Ding Hong(Shandong Peanut Research Institute,Qingdao 266100,China;Hot Spring Subdistrict Office of'Jimo District,Qingdao City,Qingdao 266200,China;Haiyang Agricultural Technology Extension Station,Haiyang 265100,China)
出处
《山东农业科学》
2020年第7期67-70,共4页
Shandong Agricultural Sciences
基金
国家重点研发计划项目(2018YFD0201000)
山东省自然科学基金项目(ZR2017YL023)
山东省农业科学院农业科技创新工程项目(CXGC2018B05)。
关键词
氮肥
花生
干物质积累
氮肥利用率
Nitrogen fertilizer
Peanut
Dry matter accumulation
Nitrogen use efficiency
