西葫芦微咸水膜下滴灌土壤水盐运移对产量影响的预测模型  

Prediction model of soil water and salt transport on yield of summer squash under mulch drip irrigation with brackish water

作　　者：郭向红[1] 毕远杰 孙西欢[1,3] 马娟娟[1] 孔晓燕[1] Guo Xianghong;Bi Yuanjie;Sun Xihuan;Ma Juanjuan;Kong Xiaoyan(College of Water Resource Science and Engineering,Taiyuan University of Technology, Taiyuan 030024,China;Shanxi Institute of Water Resources and Hydropower Research, Taiyuan 030002,China;Jinzhong University,Jinzhong 030619,China)

机构地区：[1]太原理工大学水利科学与工程学院,太原030024 [2]山西省水利水电科学研究院,太原030002 [3]晋中学院,晋中030619

出　　处：《农业工程学报》2019年第8期167-175,共9页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家自然科学基金项目(51209131);山西省自然科学基金项目(201601D011053)

摘　　要：为了定量计算微咸水膜下滴灌对土壤水盐和西葫芦产量的影响,根据微咸水膜下滴灌土壤水盐运移特点和西葫芦生长试验,建立了西葫芦微咸水膜下滴灌土壤水盐运移模型和水盐生产函数,并将二者联立,建立了西葫芦微咸水膜下滴灌土壤水盐运移对产量影响的预测模型。利用西葫芦微咸水膜下滴灌水盐试验数据对模型进行验证,结果表明模型计算的西葫芦微咸水膜下滴灌土壤含水率和土壤含盐量与实测土壤含水率和土壤含盐量的变化趋势一致,模型计算土壤含水率、土壤含盐量和西葫芦产量的均方根误差分别为0.049 cm^3/cm^3、0.065 g/kg和3.83 t/hm^2,土壤含水率、土壤含盐量和西葫芦产量的平均相对误差分别为5.17%、7.42%和5.84%,土壤含水率、土壤含盐量和西葫芦产量的平均绝对误差分别为0.047 cm^3/cm^3、0.062 g/kg和3.95 t/hm^2。所建的模型具有较高的模拟精度,可用于模拟西葫芦微咸水膜下滴灌土壤水盐动态和西葫芦产量。Water resources are very scarce in northern China. In order to improve the utilization efficiency of brackish water and agricultural water resources, Mulch drip irrigation with brackish water has been widely studied. Mulch drip irrigation with brackish water is a highly efficient irrigation technology that combines brackish water and mulch drip irrigation, which not only saves water but also makes full use of brackish water resources. In order to quantitatively calculate the effects of mulch drip irrigation with brackish water on soil water salt and summer squash yield, the water salt transport model and water salt production function of mulch drip irrigation with brackish water were established according to the characteristics of soil water-salt transport under mulch drip irrigation with brackish and summer squash growth experiment. A prediction simulation model of soil water-salt transport and yield was established by combining the two models under mulch drip irrigation with brackish water. In order to verify the model, experiments with two groups of summer squash under mulch drip irrigation with brackish water were carried out. The first group was the growth experiment of summer squash under mulch drip irrigation with different salinity of brackish water(1.7, 3.5, 5.0 g/L). The second experiment was to study the effects of different irrigation levels and different salinity of brackish water on the growth of summer squash under mulch drip irrigation. Three irrigation levels were set at seedling stage, vine-pumping stage and flowering and fruiting stage, namely 70%-90% of field water holding capacity, 60%-80% of field water holding capacity, 50%-70% of field water holding capacity, respectively. The three levels of irrigation salinity were 1.7 g/L, 3.5 g/L and 5.0 g/L, respectively. A total of nine treatments were designed by orthogonal experiment. The results showed that the soil water content, soil salt content and yield of the summer squash calculated by the model was in agreement with the trend of the measur

关 键 词：土壤 水 盐 产量 西葫芦 微咸水 膜下滴灌 

分 类 号：S152.7[农业科学—土壤学]