单 位：
湖北省恩施市农业技术推广中心;恩施市龙凤镇农业服务中心;湖北省农业科学院经济作物研究所;湖北省恩施市粮油站;湖北省土壤肥料工作站
关键词：
珠芽魔芋(Amorphophallus bulbifer);配方施肥;3414试验;回归分析
摘 要：
在湖北主要魔芋产区恩施市开展"3414"肥效试验,初步研究了不同氮磷钾配方施肥对珠芽魔芋(Amorphophallus bulbifer)产量的影响,并成功拟合建立了产量三元二次和一元二次肥料效应方程。结果表明,合理的氮磷钾肥施用量可显著提高魔芋产量,施肥量不足或过量施肥会导致魔芋产量降低;在试验地力土壤条件下,珠芽魔芋最高产量为40 863.4 kg/hm2,此时N、P2O5、K2O的施用量分别为295.1、76.5、193.5 kg/hm2;珠芽魔芋最佳经济产量为40 863.0 kg/hm2,N、P2O5、K2O的施用量分别为290.1、75.5、189.0 kg/hm2。
译 名：
Preliminary Report on "3414" Formula Fertilization Experiment of Amorphphallus bulbifer
作 者：
LI Che-shu1,SHEN Yuan-ming2,WANG Yong-jian2,WANG Shi-wu2,DENG Yuan-xiang2,WU Run3,ZHANG De-cai3,ZHENG Xing-fei4,HU Zhong-li4 (1.Agricultural Technology Extension Centre in Enshi,Enshi 445000,Hubei,China; 2.Agricultural Service Center in Longfeng Town,Enshi 445002,Hubei,China; 3.Soil and Fertilizer Station of Hubei Province,Wuhan 430070,China; 4.College of Life Sciences,Wuhan University,Wuhan 430072,China)
关键词：
Amorphophallus bulbifer;formula fertilization;"3414" experiment;regression analysis
摘 要：
"3414" fertilizer experiments were carried out in Enshi,Hubei province to study the effect of different combinations of NPK fertilizer on the yield of Amorphophallus bulbifer.Three-factor model and one-factor model were established successfully.The results showed that a balanced N,P,K fertilization with proper dosage could effectively increase the yield of konjac;while insufficient or over fertilization would reduce the agricultural production.Under the given soil condition,the highest yield was 40 863.4 kg / hm2 when N,P2O5,K2O application dose was 295.1,76.5,193.5 kg / hm2,respectively.The most economic fertilization formula was N 290.1,P2O5 75.5,K2O 189.0 kg / hm2,and the yield of konjac could be 40 863.0 kg / hm2.
