果园施药机械资源消耗水平评价模型研究
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国家重点研发计划项目(2018YFD0700603)和山东烟台校地融合发展项目


Resource Consumption Evaluation Model of Orchard Spray Machinery
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    摘要:

    在施药机械满足喷雾质量前提下,为降低果园施药综合成本,需要对果园施药机械资源消耗水平进行评估。本文选择典型地面风送喷雾机、单旋翼和六旋翼植保无人机进行果树施药试验,对比分析冠层雾滴沉积分布、雾滴穿透性、地面雾滴流失等主要喷雾效果指标,结果表明:3种施药机械在树冠纵向各层、横向各层雾滴沉积密度均大于25滴/cm2,能够满足果园植保要求;比较冠层雾滴分布/沉积均匀性,树冠纵向沿送风方向整体呈下降趋势,树冠横向由外到内整体呈下降趋势,变异系数最高分别达63.54%和79.19%;对比雾滴穿透性,风送喷雾机较优,纵向与横向变异系数最大为5.35%,单旋翼植保无人机横向最差,变异系数为35.20%,而六旋翼植保无人机纵向最差,变异系数达40.77%。但单旋翼和六旋翼植保无人机地面雾滴流失量分别是风送喷雾机的2.78%和12.50%,减少了农药浪费。进一步综合施水量、施药量、用工量、作业时长和作业能耗等指标,采用基于变异系数客观赋权法与主观赋权法两种线性加权方法,构建了施药装备资源消耗水平评价模型,验证结果均表明,综合资源消耗由小到大依次为单旋翼植保无人机、六旋翼植保无人机、风送喷雾机;两种评价方法的资源消耗综合评价指标值变异系数分别为110.2%和74.2%,说明基于变异系数客观赋权法的评价模型,综合指标值之间差异更明显、评价效果更符合实际。

    Abstract:

    In order to reduce the comprehensive cost of orchard spray, it is necessary to evaluate the resource consumption level of application machinery. A typical airassisted sprayer, a singlerotor and a sixrotor plant protection unmanned aerial vehicle (UAV) were applied for spray test. The results showed that the droplet deposition density of three spraying machines in each layer were all more than 25 droplets/cm2. The droplet distribution uniformity decreased in vertical canopies seen from the direction of blowing. Observed from the horizontal direction, the droplet distribution uniformity was also decreased from outside to inside layers. The highest coefficient of variation (CV) values were separately 63.54% and 79.19%. In terms of the droplet penetration, the airassisted sprayer was superior with the low CV value nearby 5.35%. While the CV value of the singlerotor plant protection UAV was 35.20% in the horizontal direction and the CV value of sixrotor plant protection UAV was 40.77% in vertical direction with bad penetration. The droplet loss on the ground of the singlerotor and sixrotor plant protection UAV were 2.78% and 12.50% of that of the airassisted sprayer, respectively, which reduced the pesticide waste. Then, two resource consumption evaluation models of application machinery were constructed using two linear weighting methods (objective weighting method based on coefficient of variation and subjective weighting method) with the evaluation indexes of water, pesticide, labor, time, and energy consumption. The results showed the descending order with resource consumption of the singlerotor plant protection UAV, the sixrotor plant protection UAV and the airassisted sprayer. The CV values of comprehensive evaluation index in two evaluation methods were 110.2% and 74.2%, which indicated that the evaluation model based on the objective weighting method was better. The conclusions provided a reference for farmers to choose a suitable application machinery and reduce the comprehensive cost in orchard. 

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陈炳太,郑永军,江世界,杨圣慧,吕昊暾,康峰.果园施药机械资源消耗水平评价模型研究[J].农业机械学报,2020,51(s2):289-297. CHEN Bingtai, ZHENG Yongjun, JIANG Shijie, YANG Shenghui, Lü Haotun, KANG Feng. Resource Consumption Evaluation Model of Orchard Spray Machinery[J]. Transactions of the Chinese Society for Agricultural Machinery,2020,51(s2):289-297.

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  • 收稿日期:2020-08-11
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  • 在线发布日期: 2020-12-10
  • 出版日期: 2020-12-10