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Influence of sprinkler irrigation droplet diameter, application intensity and specific power on flower damage

Yisheng ZHANG, Delan ZHU

《农业科学与工程前沿（英文）》 2017年第4卷第2期页码 165-171 doi: 10.15302/J-FASE-2017145

摘要： To determine the main parameters of droplet strike damage and avoid flower injury due to the unsuitable practices during sprinkler irrigation, an indoor experiment of irrigation droplet impact on cyclamen was conducted. The influences of different parameters such as droplet diameter, application intensity, specific power on flower strike damage was analyzed using Image Pro-Plus software to compute strike damage area and define damage level by sense-analysis. The results showed that a damage area of <1% represents a safe irrigation level, 1%–3% slight damage level, 3%–6% moderate damage level, and>6% heavy damage level. Equations of application intensity, specific power with sprinkler irrigation time and flower injury ratio were regressed against parameters which cause impact damages. The results indicated that specific power has a significant correlation with injury, and flower damage area increased as the increasing of the value of specific power for the same irrigation time. Application intensity was also correlated with injury when the droplet diameter was larger than 1 mm. When the duration of sprinkler irrigation was 1, 5 and 10 min, the threshold of impinging damage of application intensity was 25.30, 5.01 and 1.64 mm·h and the specific power was 0.467×10 , 9.340×10 and 3.110×10 W·m . These results provide a reference for determining the suitable values of sprinkler properties in operation design.

关键词： application intensity damage floriculture flowers specific power sprinkler irrigation

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面临挑战和机遇的中国花卉业

陈俊愉

《中国工程科学》 2002年第4卷第10期页码 17-20

摘要：

指出花卉业是朝阳产业，比较分析了我国花卉业与世界花卉业之特点与异同。以1999年我国首次举办’99昆明世界园艺博览会（园）为例，指出事实证明中国园林花卉业达到国际一流是可能的，但在“中华特色”上尚需大力加强。中国园林花卉业亟待加强领导、明确方向、扬长避短、全面复兴。剖析了中国花卉业“入世”后面临的严峻挑战，找到了“花卉新四化”的方向——认为这是顶着压力、抓住机遇的最佳对策。在五六十年内达到先进国家花卉业现有水平，是可能的，中国花卉业定要实现全面复兴，用几十年时间走完西方二三百年之路：即从世界园林之母的资源优势，达到并发挥全球花卉王国的生产与经营优势。

关键词：挑战机遇对策花卉花卉业前景