Integrated water and fertilizer technology has the advantages of saving water,fertilizer and labour,which is widely applied in tomato plantation. Integrated water and fertilizer technology in topdressing and whole pro...Integrated water and fertilizer technology has the advantages of saving water,fertilizer and labour,which is widely applied in tomato plantation. Integrated water and fertilizer technology in topdressing and whole process of big and small tomatoes were studied,and their application effects were contrasted and analyzed,and application advantages and scopes of the two models were concluded.展开更多
基金Supported by "Sannongliufang" Technology Collaboration Program in Zhejiang Province in 2014
文摘Integrated water and fertilizer technology has the advantages of saving water,fertilizer and labour,which is widely applied in tomato plantation. Integrated water and fertilizer technology in topdressing and whole process of big and small tomatoes were studied,and their application effects were contrasted and analyzed,and application advantages and scopes of the two models were concluded.
文摘水肥一体化技术是将灌溉与施肥融为一体的现代农业新技术,在农业生产中提高水肥利用率、减少环境污染等方面具有重要意义。本文对水肥一体化技术中的关键装置展开研究,运用Solid Works三维设计软件建立基于射流泵并联的三通道旁路吸肥式施肥机混肥系统结构,并运用Flo EFD对其进行流场仿真分析及系统性能试验验证,建立有效的混肥系统参考模型。试验结果表明,在2.2 k W抽吸泵作用下,该系统能够实现对水及单元素液肥的稳定均匀吸取功能,且三通道吸肥量实际值与仿真值的最大误差为2.06%,验证了混肥系统结构设计的可行性,为自动施肥机的设计与优化提供了参考。