Chin J Schisto Control ›› 2016, Vol. 28 ›› Issue (1): 75-78,91.DOI: 10.16250/j.32.1374.2015175

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Development and application of Jingcen DY-1 spraying tanker for Oncomelania hupensis snail control

WANG Jia-song1, HE Liang-cai1*, RONG Xian-bing1, YUAN Mei-zhi1, WANG-min1, WANG Ke-jun2, ZHOU Ya-dong1, TIAN Ke-qing1, ZHANG Xiao-feng2   

  1. 1 Institute of Schistosomiasis Prevention and Control, Jingzhou Municipal Center for Disease Control and Prevention, Jingzhou 434000, China; 2 Public Welfare Service Center of Cenhe Farm, Jingzhou Economic Development Zone, Hubei Province, China
  • Online:2016-02-23 Published:2016-02-23
  • Contact: HE Liang?cai

荆岑DY?1型血防灭螺药液专用喷洒机研制与应用

王加松1,何亮才1*,荣先兵1,袁梅枝1,王敏1,王克俊2,周亚东1,田克卿1,张晓凤2   

  1. 1 湖北省荆州市疾病预防控制中心血吸虫病预防控制所 (荆州434000); 2 湖北省荆州市开发区岑河农场公益性服务中心
  • 通讯作者: 何亮才
  • 作者简介:王加松, 男, 本科, 主任医师。研究方向: 血吸虫病预防与控制
  • 基金资助:
    湖北省卫生和计划生育委员会项目 (WJ2015XB028); 荆州市卫生和计划生育委员会资助项目 (201502)

Abstract: Objective Objective To develop a Jingcen DY?1 type spraying tanker for Oncomelania hupensis snail control and evaluate its effect of field application as well as the cost. Methods Methods The currently available tractor was used as a vector,and the mechan? ical and electrical equipments and containers were integrated with shafts,pipelines and electric lines to produce a spraying tank? er for snail control,with the functions of carrying people and molluscicides,generating electric power and getting water,mixing stocking solutions,adjusting molluscicide solutions evenly,and spraying drugs. The volume of the molluscicide solution,flow rate of water injection,and the flow rate,range and advance speed of the spray gun were tested,and the solution concentrations of molluscicide in the tanker and at the muzzle of the spray gun at different time were detected. Meanwhile,the molluscicidal ef? fect and cost of the spraying tanker were analyzed by the field test. Results Results The volume of the liquid storage pot of the Jingcen DY?1 type spraying tanker was 1 800 L,the flow rate of water injection was 400 L/min,the flow rate and the spray range of the standard spray gun were 110-200 L/min and 19.70-23.50 m,respectively,the efficiency of drug spraying of the spraying tanker was 6 000 m2 /h,and the ratio of spray width(m)to march speed(m/min)was 1 ∶200. When 5 min post mother liquid recirculat? ing,the average concentration of the molluscicide at the upper?,middle? and lower?layers of the liquid storage pot was (1 030.39 ± 43.00)mg/L,with a variation coefficient of 4.17%. The average concentration of the molluscicide in the spraying process(spraying for 2,4,6,8,9 min)was(953.00 ± 68.87) mg/L,with a variation coefficient of 7.22%. The concentration of the residual drug in the liquid storage pot post spraying was 1 000.43 mg/L,which reached the effect concentration for snail con? trol. After spraying for 7 days in the field,the average density of living snails reduced by 88.20% as compared to that before spraying,and the adjusted mortality of snails was 87.65%. The unit cost of Jingcen DY?1 spraying tanker was 0.086 7 Yuan/m2 ,which reduced by 58.20% as compared to that of the conventional spraying tanker. Conclusions Conclusions Jingcen DY?1 type spraying tanker for snail control which integrates various equipments together can effectively control the concentration and dose of the mol? luscicide,and the machine is labor?saving,efficient,economic and well adapted,and is worthy to be widely applied.

Key words: Schistosomiasis, Oncomelania hupensis, Molluscicide, Spraying tanker, Niclosamide

摘要: 目的 目的 研制荆岑DY?1型血防灭螺药液专用喷洒机 (荆岑DY?1型喷洒灭螺机), 评价其现场应用效果, 并分析其 成本。方法 方法 采用现有动力牵引机为载体, 将相关机、 电设备和容器等, 经传动轴、 管线和电线连接成整体, 使其具有载 人运药、 发电取水、 电机搅拌母液、 循环调匀药液、 喷枪喷药等功能。测试药液容量、 注水流量, 喷枪流量、 射程与行进速 度。检测不同时段罐内及喷枪口药液浓度。通过现场试验, 评价其灭螺效果, 并进行成本分析。结果 结果 该机储药罐容量 1 800 L, 注水流量400 L/min, 标准喷枪喷药流量110~200 L/min、 射程19.70~23.50 m, 施药效率6 000 m2 /h, 施药宽度 (m)∶行进速度 (m/min) =1∶200。母液循环5 mim时储液罐上、 中、 下层药液平均浓度为 (1 030.39 ± 43.00) mg/L, 变异系 数 (CV) 为4.17%。现场喷洒2、 4、 6、 8、 9 min, 药液平均浓度为 (953.00 ± 68.87) mg/L, CV为7.22%; 喷洒结束后罐体残留药 液浓度为1 000.43 mg/L, 达到有效灭螺浓度。现场喷洒灭螺后7 d, 活螺平均密度较施药前下降88.20%, 钉螺校正死亡率 为87.65%。该机单位成本为0.086 7元/m2 , 较传统的液药式灭螺机成本下降58.20%。结论 结论 荆岑DY?1型喷洒灭螺机集 多种设备于一体, 能有效控制施药浓度和剂量, 省力、 高效、 成本低、 适应性强, 具有现场推广应用价值。

关键词: 血吸虫病, 钉螺, 灭螺药物, 喷洒机, 氯硝柳胺

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