溶解混施水肥一体化装置施肥性能试验研究  

Experiment on fertilization performance of dissolved and mixed water-fertilizer integrated device

作　　者：张志洋 李红[1] 陈超[1] 夏华猛 ZHANG Zhiyang;LI Hong;CHEN Chao;XIA Huameng(National Research Center of Pumps,Jiangsu University,Zhenjiang,Jiangsu 212013,China)

机构地区：[1]江苏大学国家水泵及系统工程技术研究中心,江苏镇江212013

出　　处：《排灌机械工程学报》2018年第11期1115-1119,共5页Journal of Drainage and Irrigation Machinery Engineering

基　　金："十三五"国家重点研发计划项目(2017YFD0201502);农业部公益性行业科研专项(201503130)

摘　　要：为了了解溶解混施水肥一体化装置的性能,以装置出口水肥溶液浓度的均匀性作为衡量装置施肥性能的主要参数,采用控制变量法,研究滤网桶参数、进口流量及加料器对装置施肥性能的影响.结果表明:采用60目的滤网桶时,出口水肥浓度均匀系数比40目的高6.1%;采用250 mm的滤网桶时,出口水肥浓度均匀系数比150 mm的高4.3%;相比于流量为2.5,2.0 m^3/h,采用1.5 m^3/h时,出口水肥浓度均匀系数分别高了12.6%和17.3%;使用加料器时,装置出口水肥浓度的均匀系数比不使用加料器加肥时高了9.9%.因此滤网桶的参数、流量均对装置施肥性能有明显的影响,滤网桶网孔数越多,滤网桶直径越大,流量越小,装置出口水肥溶液浓度的均匀系数越大,装置的施肥性能越好.The fertilization performance of a dissolved and mixed water-fertilizer integrated device was characterized and the uniformity of solution concentration at the outlet of the device was used as the main parameter measuring the performance. The effects of filter parameters, inlet flow rate and fertili- zer feeder on the performance were studied by using variable control methods. Experimental results show that the uniform coefficient of solution concentration at the outlet of the device for 60 mesh filter is 6.1% better than that for 40 mesh filter. For the filter with 250 mm diameter, the uniform coefficient is 4.3% higher than that for the filter with 150 mm diameter. Under the condition of 1.5 m^ 3/h flow rate, the uniformity coefficient of solution concentration at the outlet is 12.6% and 17.3% higher in comparison with the flow rates of 2.5 m^ 3/h and 2.0 m^ 3/h. When fertilizer feeder is used, the uniformity coefficient is 9.9% higher than that without the feeder. Therefore, filter parameters and flow rate exhibit obviously influences on the fertilization performance of the device. The more the number of filter meshes and the larger the filter diameter as well as the lower the flow rate, the higher the uniformity coefficient and the better the fertilization performance.

关 键 词：水肥一体化 溶解混施 固体肥料 施肥性能 

分 类 号：S275.9[农业科学—农业水土工程]