基于水肥耦合的滴灌西兰花光合-产量-品质试验及综合评价  

Experiment and Comprehensive Evaluation of Photosynthesis,Yield and Quality of Broccoli Under Drip Irrigation Based on Water and Fertilizer Coupling

作　　者：陈华斌 田军仓[1,2,3] 李王成 沈晖[1,2,3] CHEN Huabin;TIAN Juncang;LI Wangcheng;SHEN Hui(Institute of Civil Engineering and Water Conservancy Engineering, Ningxia University, Yinchuan 750021;Ningxia Water Saving Irrigation and Water Resources Control Engineering Technology Research Center, Yinchuan 750021;Engineering Research Center of Ministry of Education of Modern Agricultural Water Resources Utilization in Dry Area, Yinchuan 750021)

机构地区：[1]宁夏大学土木与水利工程学院,银川750021 [2]宁夏节水灌溉与水资源调控工程技术研究中心,银川750021 [3]旱区现代农业水资源高效利用教育部工程研究中心,银川750021

出　　处：《水土保持学报》2021年第6期235-242,共8页Journal of Soil and Water Conservation

基　　金：宁夏自治区重点研发计划重大项目“宁夏现代化生态灌区关键技术集成研究与示范”(2018BBF02022);宁夏高等学校一流学科建设项目(NXYLXK2017A03,NXYLXK2021A03)。

摘　　要：研究膜下滴灌条件下,不同水肥组合对西兰花光合、产量、水肥利用效率及品质的影响,并建立西兰花产量—品质与水肥因素的回归模型及主成分综合评价体系,寻求西兰花最优的灌水量和施肥量组合,为西兰花高效节水灌溉提质增效提供技术依据。以西兰花为试验作物,采取膜下滴灌的灌溉方式,采用二因素三水平随机区组试验设计。灌水量设置3个水平,分别为1740,2175,2610 m^(3)/hm^(2),施肥量设置3个水平,分别为1200,1500,1800 kg/hm^(2),共9个处理。结果表明:在生育期降水量为20.8 mm,灌水量为2610 m^(3)/hm^(2),施肥量为1800 kg/hm^(2),西兰花的产量及品质最好,综合评价得分也最高,说明高水高肥处理下最有利于西兰花的生长,是适宜本地滴灌西兰花的灌溉施肥制度。The effects of different water and fertilizer combinations on the photosynthesis,yield,water and fertilizer use efficiency and quality of broccoli under drip irrigation were studied.The regression model and principal component comprehensive evaluation system of yield quality and water and fertilizer factors of broccoli were established to seek the optimal combination of irrigation amount and fertilizer amount,so as to provide technical basis for improving the quality and efficiency of efficient water-saving irrigation of broccoli.Taking broccoli as the experimental crop,drip irrigation under mulch was adopted,and two factors and three levels randomized block experiment design was adopted.The irrigation amount was set at three levels,which were 1740,2175,2610 m^(3)/hm^(2),and the fertilization amount were 1200,1500,1800 kg/hm^(2).There were nine treatments.The results showed that in the growth period,the precipitation was 20.8 mm,the irrigation amount was 2610 m^(3)/hm^(2),and the fertilization amount was 1800 kg/hm^(2).The yield and quality of broccoli were the best,2610 m3/hm^(2)irrigation and 1800 kg/hm^(2)fertilization,and the comprehensive evaluation score was also the highest,which indicated that the high water and high fertilizer treatment was the most favorable for the growth of broccoli,and it was a suitable irrigation and fertilization strategy for local drip irrigation of broccoli.

关 键 词：西兰花 水肥耦合 非线性回归 主成分分析 

分 类 号：S635.3[农业科学—蔬菜学]