摘要
以‘花育25’为材料,研究氮、钙配施及适期追肥对花生根系生长及氮、钙素积累分配及氮素利用的影响.结果表明,同高氮肥条件下,增施钙肥T2(基施N157.5+CaO450kg/hm^2)处理根系生物量较T1(基施N157.5)增加20.26%,显著促进了根系的生长发育,但对花生根系形态影响较小,且增施钙肥提高了各器官氮、钙素积累量及氮素利用率、氮肥偏生产力增施钙肥且作基肥条件下,减施氮肥28.6%+花针期追施氮肥处理(T4)荚果的氮素积累量降低不明显,但显著提高花生的氮肥农学利用效率及氮肥偏生产力,说明减氮增钙并配合氮素运筹可提高花生的氮素利用.T4处理根系生物量、氮素利用率较T5(减氮28.6%+钙肥追施)处理均有显著提高,但根系长度、总表面积、平均直径无显著差异,根系总体积显著提高18.29%(P<0.05).综合根系形态,氮、钙素吸收、氮肥利用效率等研究结果,以T4(基施N67.5kg/hm^2+CaO450kg/hm^2+追施N45kg/hm^2)处理效果较好,既有利于花生产量的提高,又利于实现氮肥减施的目的。
Using’Huayu 25’as material,the effects of combined application of nitrogen and calcium fertilizers and appropriate topdressing on root growth,nitrogen,calcium accumulation and distribution,nitrogen utilization of peanut were studied.The results showed that under the same high nitrogen fertilizer condition,root biomass of adding calcium fertilizer T2(basic application N157.5+CaO450 kg/hm^2)compared with T1(basic application N157.5)increased by 20.26%,that promoted the root growth,but had little effect on the root morphology of peanuts.And adding calcium fertilizer increased the nitrogen,calcium accumulation of various organs,nitrogen utilization,and nitrogen partial productivity.Under the condition of adding calcium fertiliers and basic application,Nitrogen accumulation in pods of T4(Reduced nitrogen fertilizer application by 28.6%+topdressing nitrogen fertilizer application at flowering stage)did not decrease significantly.But it significantly increased the nitrogen agronomic efficiency and nitrogen partial productivity,that reducing nitrogen and increasing calcium combined with nitrogen management can increase nitrogen utilization in peanuts.Compared with T5(28.6%nitrogen reduction and topdressing with calcium fertilizer),the root biomass and nitrogen utilization rate of T4 treatment were significantly improved.However,there was no significant difference in root length,root surface area,root average diameter.Root volume increased significantly by 18.29%(P<0.05).Comprehensive root morphology,nitrogen and calcium absorption,nitrogen fertilizer utilization efficiency,T4(basic application N67.5 kg/hm^2+CaO450 kg/hm^2+topdressing N45 kg/hm^2)had a better treatment.Not only beneficial to increasing the yield of peanuts,but also to achieve the purpose of reducing nitrogen fertilizer.
作者
刘颖
伊淼
王建国
郭峰
张佳蕾
唐朝辉
李新国
万书波
LIU Ying;YI Miao;WANG Jian-guo;GUO Feng;ZHANG Jia-lei;TANG Zhao-hui;LI Xin-guo;WAN Shu-bo(Biotechnology Research Center,Shandong Academy of Agricultural Sciences,China/Key Laboratory of Crop Genetic Improvement,Ecology and Physiology,Jinan 250100,China;College of Agriculture,Qingdao Agricultural University,Qingdao 266109,China;Scientific Observation and Experiment Station of Crop Cultivation in East China,Ministry of Agriculture and Village,Dongying 257000,China)
出处
《聊城大学学报（自然科学版）》
2020年第4期98-104,共7页
Journal of Liaocheng University:Natural Science Edition
基金
国家重点研发计划(2018YFD0201000)
山东省重大科技创新工程项目(2018YFJH0601)
山东省农业科学院农业科技创新工程(CXGC2018D04、CXGC2018E13)。
关键词
花生
氮肥
钙肥
根系性状
氮素利用率
peanut
nitrogen fertilizer
calcium fertilizer
root traits
nitrogen use efficiency
