甘薯田间肥料效应试验分析初报  

Initial Report and Analysis of Sweetpotato Field Fertilizer Effect Experiment

作　　者：张道微 张超凡[1] 黄艳岚[1] 张亚[1] 周虹[1] 董芳 黄伯军 ZHANG Dao-wei;ZHANG Chao-fan;Huang Yan-lan;Huang Ya;ZHOU Hong;DONG Fang;HUANG Bo-jun(Hunan Crops Research Institute, Changsha 410125, PRC;Center for Froreign Economic Coorperation of Hunan Agricultural Committee, Changsha 410005, PRC)

机构地区：[1]湖南省作物研究所,湖南长沙410125 [2]湖南省农委对外经济合作中心,湖南长沙410005

出　　处：《湖南农业科学》2017年第11期21-24,共4页Hunan Agricultural Sciences

基　　金：中央财政测土配方施肥补贴项目(2015);湖南省重点研发计划(2016NK2201);湖南农业科技创新资金(2017XC13);长沙市甘薯工程技术研究中心项目(kq1701024)

摘　　要：针对湖南地区具有代表性的中等肥力耕地,设计3414测土配方试验,开展甘薯田间肥料效应研究,利用SPSS 19.0版软件对检测数据进行统计分析,模拟出甘薯氮、磷、钾肥施用量与甘薯产量、利润关系的回归方程。结果表明:(1)单因素施肥条件下,氮、磷、钾肥最大施肥量范围分别为8.71~23.32、5.59~6.32、7.69~23.77 kg/667m2,最大产量范围分别为2 960~3 595、2 866~3 205、2 993~3 678 kg/667m2。(2)实现甘薯最大产量的氮、磷、钾施用量分别为8.73、6.64、7.06 kg/667m2,最高产量为3 190 kg/667m2,4个试验点较对照增产51%~101%。(3)根据市场价格计算,实现最大经济效益的氮、磷、钾最佳施肥量分别为14.03、11.75、32.2 kg/667m2,最高产量为3 288 kg/667m2,此时最大经济效益为3 147元/667m2,4个试验点较对照增产54%~91%。根据甘薯田间肥效研究结果,推荐氮、磷、钾肥施用范围分别为8.71~23.32、5.59~6.32、7.69~23.77 kg/667m2,甘薯产量对氮肥施用最敏感,需要结合各地实际情况调整。Four test points were selected in Hunan province to implemented the3414test scheme,which representative medium fertility level of arable land.The regression equation of the relationship between the N,P,K fertilizers application to yield and profit of sweet potato cultivation was simulated by SPSS19.0software,and the following conclusions were listed.(1)According to single factor fertilization effect analysis,the relationship between nitrogen,phosphorus,potassium fertilizer and sweet potato yield were obtained.The ranges of maximum application of N,P,K fertilizer were as follows:130.65-349.80,83.85-94.80,115.35-491.55kg/hm2,and the corresponding maximum yield were44400-53925,42990-48075and44895-55170kg/hm2respectively.(2)The more suitable N,P,K fertilizers for the higher yield of sweet potato were130.95,99.60,105.90kg/hm2respectively,the highest yield was47850kg/hm2.The maximum yield of four test points under maximum fertilization scheme increased51%-101%to control.(3)According to the market price,the maximum economic benefit of fertilization scheme of N,P,K were210.45,176.25,483.00kg/hm2,the highest yield was49320kg/hm2.The maximum yield of four test points under maximum economic benefit fertilization scheme increased by54-91%%,and the best economic benefit is47205yuan/hm2(RMB).It is suggested that the supply range of N,P,K fertilizers are130.65-349.80,83.85-94.80,115.35-491.55kg/hm2,which need to be adjusted according to the actual situation in filed.

关 键 词：甘薯 施肥效应 3414测土配方 回归方程 最大施肥量 最佳施肥量 

分 类 号：S531[农业科学—作物学]