南方农业学报2013，Vol.44Issue(1)：81-86,6.DOI:10.3969/j:issn.2095-1191.2013.1.81
木薯对氮、磷、钾、镁、锌、硼的吸收特性及施肥效应
Fertilization effects and nutrient absorption characteristics of nitrogen, phosphorus, potassium, magnesium, zinc,and boron on cassava
摘要
Abstract
[Objective]This research studied the effects of nitrogen, phosphorus, potassium, magnesium, zinc, and boron on the nutrient absorption characteristics and growth of cassava. [Method]Under field experiment, different fertilization treatments, including the optimal OPT treatment (N+P+K+Mg+Zn+B), reduced nitrogen fertilizer treatment OPT-N, reduced phosphorus fertilizer treatment OPT-P, reduced potassium fertilizer treatment OPT-K, reduced magnesium fertilizer treatment OPT-Mg, reduced zinc fertilizer treatment OPT-Zn, reduced boron fertilizer treatment OPT-B, and non-fertilization treatment, were set to determine the cassava yield and the nutrient absorption strength in cassava root tubes, stems, and leaves. [Result]Under OPT treatment, the absorbed untrients of N, P, K, and Zn were mainly concentrated in cassava stems, Ca and Mg were mainly concentrated in cassava leaves and stems, and B was mainly concentrated in cassava leaves. By increasing the nitrogen, phosphorus, potassium, and magnesium fertilizers application, cassava yield increased by 38.01%, 13.09%, 23.14%, and 8.99% respectively. By increasing 1 kg of N, P2O5, K2O, and MgO fertilizer usage, the cassava yield increased by 101 , 54, 22 and 49 kg, respectively. The maximum production value of the OPT treatment was ￥13,217 Yuan/ha. General fertilization could improve the cassava nutrient absorption, but potassium, zinc, and boron fertilizers could inhibit the absorption of magnesium. [Conclusion]The intensity of N, P, K nutrient absorption in cassava appeared to be parabolic shaped, which, before the tuber enlargement stage, a gradual increase was observed. After tuber enlargement, the intensity of N, P, K nutrient absorption in cassava decreased. Different fertilization condition had significantly different effects on cassava yield.关键词
木薯/氮肥/磷肥/钾肥/镁肥/锌肥/硼肥/施肥条件/施肥效应Key words
cassava/ nitrogen/ phosphorus/ potassium/ magnesium/ zinc/ boron/ characteristics/ different fertilization conditions分类
农业科技引用本文复制引用
谭宏伟,周柳强,谢如林,黄美福,谭庆军,阮康乐..木薯对氮、磷、钾、镁、锌、硼的吸收特性及施肥效应[J].南方农业学报,2013,44(1):81-86,6.基金项目
国家自然科学基金重点项目(U1033004-12) （U1033004-12）
国家科技支撑计划项目(2007BAD30) （2007BAD30）
IPNI资助项目 （）
国家农业部项目(201003014-2-3) （201003014-2-3）
广西自然科学基金项目(2011GXNSFA018097) （2011GXNSFA018097）
广西土壤环境资源数字化管理技术体系的研究创新团队建设项目(桂农科2012YT02) （桂农科2012YT02）
