摘要
为明确油莎豆合理配施,提高油莎豆产量及肥料利用效率,以油莎豆为研究对象,利用“3414”肥料田间试验于2020-2021年在巴彦淖尔市磴口县乌兰布和农场分析了14个氮磷钾肥料配比处理对油莎豆生物产量、块茎产量、肥料偏生产力和农学效率的影响。结果表明:在N3P2K_(2)处理下油莎豆地上生物量最高,N_(2)P_(2)K_(3)处理下油莎豆地下生物量最高,且两年生物量较空白区分别提高45.75%、31.39%和53.96%、32.27%。在N_(2)P_(2)K_(3)处理下油莎豆块茎鲜产最高,较空白区分别提高101.86%、77.24%,且油莎豆对磷肥依赖较大。N、P、K肥偏生产力分别在N_(1)P_(1)K_(2)、N_(2)P_(1)K_(1)、N_(2)P_(2)K_(1)处理下达最高;农学利用率分别在N_(1)P_(2)K_(2)、N_(2)P_(1)K_(2)、N_(2)P_(2)K_(3)处理下达最高。氮磷钾肥对油莎豆产量存在明显的互作效应,两年数据均表现为在中磷中钾、中氮中钾、中氮中磷水平时最利于氮、磷、钾肥效的发挥。两年最高产量的氮磷钾施肥用量分别为N 151.7~174.0 kg/hm^(2);P2O5192.0~195.3 kg/hm^(2);K_(2)O 95.9~102.4 kg/hm^(2)。两年的理论产量分别达到9454.5 kg/hm^(2)和9674.8 kg/hm^(2)。
To improve yield and fertilizer use efficiency of Cyperus esculentus L.,'3414'fertilizer field experi⁃ment was conducted in Wulanbuhe Farm(Dengkou County,Bayannaoer City)from 2020 to 2021.The aim was to analyze the effects of 14 NPK fertilizer ratios on biological yield,tuber yield,partial factor productivity and agrono⁃my efficiency of C.esculentus.Results showed that the aboveground biomass reached the highest under N3P2K_(2) treat⁃ment,and the underground biomass reached the highest under N_(2)P_(2)K_(3) treatment,and the biomass in two years in⁃creased by 45.75%,31.39%and 53.96%,32.27%compared with the blank area.Under N_(2)P_(2)K_(3) treatment,the tu⁃ber fresh yield reached the highest,which were 101.86%and 77.24%higher than those in blank area in the 2 years respectively.N,P and K fertilizer partial factor productivity reached the highest under N_(1)P_(1)K_(2),N_(2)P_(1)K_(1) and N_(2)P_(2)K_(1) treatments,respectively.The agronomic efficiency reached the highest under N_(1)P_(2)K_(2),N_(2)P_(1)K_(2),and N_(2)P_(2)K_(3) treat⁃ments,respectively.An obvious interaction effect was found between N,P and K fertilizers on yield.Two-year data showed that fertilizers effects were the best at medium phosphorus and potassium,medium nitrogen and potassium,medium nitrogen and phosphorus levels.The fertilization rates of NPK with the highest yield in two years were N at 151.7-174.0 kg/hm^(2),P2O5 at 192.0-195.3 kg/hm^(2),K_(2)O at 95.9-102.4 kg/hm^(2).The theoretical yield in the 2 years reached 9454.5 kg/hm^(2) and 9674.8 kg/hm^(2) respectively.
作者
曹秭琦
任永峰
路战远
张向前
赵小庆
董琦
CAO Zi-qi;REN Yong-feng;LU Zhan-yuan;ZHANG Xiang-qian;ZHAO Xiao-qing;DONG Qi(School of Life Sciences,Inner Mongolia University,Hohhot 010018,China;Inner Mongolia Academy of Agri-culture and Animal Husbandry,Hohhot 010018,China)
出处
《中国油料作物学报》
CAS
CSCD
北大核心
2023年第2期368-377,共10页
Chinese Journal of Oil Crop Sciences
基金
国家重点研发计划(2019YFC0507602)。
关键词
油莎豆
肥料配施
产量
肥料利用效率
互作效应
Cyperus esculentus L.
fertilizer application
yield
fertilizer use efficiency
interaction effect
