蔬菜大棚墒情传感器垂向埋设位置研究
发布时间：2018-11-26 07:30
【摘要】：针对当前国内外墒情传感器分层布置的习惯及降低传感器埋设量的愿望,研究了蔬菜大棚墒情传感器在垂向上的代表性问题。以江苏省宿迁市宿城区番茄大棚为例,利用Hydrus-1D模型分别模拟番茄苗期、开花坐果期和盛果采摘期灌水之后15 d内的根系层内含水率分布变化的情况。根据模拟结果,将40 cm的主要根系层平均分为10个土层,通过对灌水后各个土层含水率与根系层平均含水率进行显著性检验,进一步将无显著性差异土层内各测点的含水率与根系层平均含水率进行比较。结果表明,10~16 cm深度区域的土壤含水率基本能够代表根系层的平均含水率。因此,蔬菜大棚内单个墒情传感器应当埋设在10~16 cm的深度范围。
[Abstract]:In view of the habit of layered arrangement of moisture sensors at home and abroad and the desire to reduce the amount of sensors embedded, the representative problem of soil moisture sensors in vegetable greenhouse in vertical direction was studied. Taking the tomato shed in Sucheng District of Suqian City, Jiangsu Province as an example, Hydrus-1D model was used to simulate the distribution of water content in root layer within 15 days after irrigation at seedling stage, flowering and fruit setting stage and fruit picking stage, respectively. According to the simulation results, the main root layer of 40 cm was divided into 10 soil layers on average, and the moisture content of each soil layer and the average water content of root layer after irrigation were tested significantly. Furthermore, the average moisture content of root layer was compared with the water content of each measuring point in the soil layer without significant difference. The results showed that the soil moisture content in the 10 ~ (10) ~ (16) cm depth region could represent the average water content of root layer. Therefore, a single moisture sensor in vegetable greenhouse should be embedded in the depth range of 10 ~ 16 cm.
【作者单位】： 杨凌职业技术学院水利工程学院;河海大学水利水电学院;河海大学水文水资源与水利工程科学国家重点实验室;
【基金】：水利部公益性行业科研专项经费项目(201301014)
【分类号】：S152.7;TP212
本文编号：2357796
[Abstract]:In view of the habit of layered arrangement of moisture sensors at home and abroad and the desire to reduce the amount of sensors embedded, the representative problem of soil moisture sensors in vegetable greenhouse in vertical direction was studied. Taking the tomato shed in Sucheng District of Suqian City, Jiangsu Province as an example, Hydrus-1D model was used to simulate the distribution of water content in root layer within 15 days after irrigation at seedling stage, flowering and fruit setting stage and fruit picking stage, respectively. According to the simulation results, the main root layer of 40 cm was divided into 10 soil layers on average, and the moisture content of each soil layer and the average water content of root layer after irrigation were tested significantly. Furthermore, the average moisture content of root layer was compared with the water content of each measuring point in the soil layer without significant difference. The results showed that the soil moisture content in the 10 ~ (10) ~ (16) cm depth region could represent the average water content of root layer. Therefore, a single moisture sensor in vegetable greenhouse should be embedded in the depth range of 10 ~ 16 cm.
【作者单位】： 杨凌职业技术学院水利工程学院;河海大学水利水电学院;河海大学水文水资源与水利工程科学国家重点实验室;
【基金】：水利部公益性行业科研专项经费项目(201301014)
【分类号】：S152.7;TP212
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1 申孝军;孙景生;张寄阳;宋妮;刘小飞;杨磊;;滴灌条件下土壤平均含水率计算方法研究[J];水土保持学报;2011年03期
，本文编号：2357796
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