宁夏引黄灌区大棚西瓜膜下滴灌水肥耦合效应  

Water and fertilizer coupling effect of drip irrigation under film in greenhouse watermelon in irrigation area of Yellow River diversion in Ningxia

作　　者：郭松[1] 沙新林[2] 杨惠勤 李荣 姜雪琴[2] 路洁[2] 赵丹青[2] 刘声锋[1] GUO Song;SHA Xinlin;YANG Huiqin;LI Rong;JIANG Xueqin;LU Jie;ZHAO Danqing;LIU Shengfeng(Institute of Germplasm Resources,Ningxia Academy of Agricultural and Forestry Sciences,Yinchuan 750002,Ningxia,China;Ningxia Academy of Agricultural and Forestry Sciences,Yinchuan 750002,Ningxia,China;Wuzhong City Agricultural and Rural Bureau of Litong District,Wuzhong 751100,Ningxia,China)

机构地区：[1]宁夏农林科学院种质资源研究所,银川750002 [2]宁夏农林科学院,银川750002 [3]吴忠市利通区农业农村局,宁夏吴忠751100

出　　处：《中国瓜菜》2021年第5期40-44,共5页China Cucurbits And Vegetables

基　　金：宁夏农科院自主科研项目(NKYZZ-G-19-09);宁夏特色优势产业关键技术攻关项目。

摘　　要：针对宁夏吴忠拱棚西瓜栽培生产中水肥利用率不高、水肥施入不同步等制约因素,充分利用西瓜膜下滴灌条件,探索适宜水平下水、氮和钾之间的相互作用,分析其在大棚高畦膜下滴灌条件下的产量效应,建立吴忠黄灌区大棚西瓜产量数学模型,以氮肥和钾肥配施提高补灌水分利用效率,达到提高植株整体的生长、品质及产量的目的。采用频率分析法对产量模型进行模拟的结果表明,产量大于47700 kg·hm^(-2)的方案中最佳农艺措施为:补水量904.8~1014.75 m^(3)·hm^(-2)、施氮肥量172.69~204.775 kg·hm^(-2)、施钾肥量204~218.2 kg·hm^(-2)。根据不同产量水平下的因素分析,总结了最优组合方案,可达到提高植株整体的抗性、制约土传病害蔓延的效果。In view of the limited factors such as low water and fertilizer utilization rate and unsynchronized water and fertilizer application in watermelon cultivation in Wuzhong arch shed of Ningxia.The interaction among water,nitrogen and potassium was explored under the condition of drip irrigation.The yield effect of drip irrigation under plastic film was analyzed,and a mathematical model of watermelon yield was established in Wuzhong Yellow River irrigation area.The combination of nitrogen and potassium fertilizer can improve water use efficiency,promote plant growth,and improve quality and yield.The results show that Frequency analysis method was used to simulate the yield model,and the best agronomic measures were as follows:water supply 904.8-1014.75 m^(3)·hm^(-2),nitrogen application 172.69^(-2)04.775 kg·hm^(-2) and potassium application 204^(-2)18.2 kg·hm^(-2).According to the analysis of factors under different yield levels,a group of optimal combination schemes is summarized,which can improve the overall resistance of plants and restrict the spread of soil borne diseases.

关 键 词：西瓜 大棚 膜下滴灌 引黄灌区 水肥耦合 

分 类 号：S651[农业科学—果树学]