施用钾肥对木薯养分积累及产量品质的影响  

Effects of Potassium Application on the Nutrient Accumulation,Yield,and Quality of Cassava

作　　者：谢海弘 李双江 陈默 陈璐 陈佳富 王君[1] 朱杰辉 宋勇[1,2,4,5] XIE Hai-hong;LI Shuang-jiang;CHEN Mo;CHEN Lu;CHEN Jia-fu;WANG Jun;ZHU Jie-hui;SONG Yong(College of Horticulture,Hunan Agricultural University,Changsha 410128,PRC;Yuelushan Laboratory,Changsha 410128,PRC;College of Bioscience and Biotechnology,Hunan Agricultural University,Changsha 410128,PRC;Hunan Provincial Engineering Research Center for Potatoes,Changsha 410128,PRC;Engineering Research Center for Horticultural Crop Germplasm Creation and New Variety Breeding,Ministry of Education,Changsha 410128,PRC)

机构地区：[1]湖南农业大学园艺学院,湖南长沙410128 [2]岳麓山实验室,湖南长沙410128 [3]湖南农业大学生物科学技术学院,湖南长沙410128 [4]湖南省马铃薯工程技术研究中心,湖南长沙410128 [5]园艺作物种质创新与新品种选育教育部工程研究中心,湖南长沙410128

出　　处：《湖南农业科学》2025年第1期28-33,共6页Hunan Agricultural Sciences

基　　金：财政部和农业农村部:国家现代农业产业技术体系资助(No.CARS-11-HNSY)。

摘　　要：为探究不同施钾水平对木薯生长、钾素吸收、钾肥利用率、产量、品质与经济效益的影响,优化木薯种植过程中的肥料养分管理,以木薯常规食用品种SC9为实验材料进行栽培试验。试验设置CK(不施钾,对照),K1(100 kg/hm^(2))、K2(150 kg/hm^(2))、K3(200 kg/hm^(2))和K4(250 kg/hm^(2))5个施钾水平处理。结果表明,与不施钾肥相比,施钾处理下木薯产量提高15.14%~33.86%,木薯淀粉含量提高14.32%~23.35%。其中,K1处理木薯取得最大产量、最佳的经济效益和最优的钾肥利用率。综合来看,在木薯生产上,推荐钾肥(K2O)施用量为100 kg/hm^(2)。The effects of different potassium application levels on the growth,potassium absorption,potassium utilization rate,yield,quality,and economic benefits of cassava were studied to optimize the fertilizer management during cassava cultivation.The edible cassava cultivar'SC9'was cultivated with five potassium application levels of CK(no potassium application),K1(100 kg/hm^(2)),K2(150 kg/hm^(2)),K3(200 kg/hm^(2)),and K4(250 kg/hm^(2)).The results showed that compared with CK,K1-K4 increased the cassava yield by 15.14%-33.86%and cassava starch content by 14.32%-23.35%.K1 achieved the highest cassava yield,economic benefit,and potassium utilization rate.In summary,the recommended potassium application rate for cassava production was(K2O)100 kg/hm^(2).

关 键 词：木薯 施钾水平 产量 品质 钾肥利用率 经济效益 

分 类 号：S533[农业科学—作物学]