玉米“干播湿出”首次滴水量研究  

Study on the first drip irrigation amount of dry seeding and wet emergence technology of maize

作　　者：解艳玲[1] 陈萍[1] 卜建华[1] Xie Yanling;Chen Ping;Bu Jianhua(Agricultural Technology Extension and Service Center of Ningxia Agricultural Reclamation,Yinchuan,750024,China)

机构地区：[1]宁夏农垦农林牧技术推广服务中心

出　　处：《农业科学研究》2019年第2期18-21,共4页Journal of Agricultural Sciences

基　　金：宁夏农垦高效节水水肥一体化技术示范推广项目

摘　　要：为明确宁夏灌区滴灌春玉米“干播湿出”首次合理滴水量,以“天赐19”为供试材料,盆栽条件下,设置7个土壤含水量梯度,分别为10%、13%、16%、19%、22%、25%、28%,每个梯度5个重复,研究不同水分处理对玉米出苗时间及出苗速率的影响.结果表明:土质为沙壤土的田块,当土壤含水量为10%时,玉米种子吸水困难,不能正常出苗;当土壤含水量为13%,出苗率只有75%,出苗率太低,不能在实际生产中应用;当土壤含水量在16%~28%时,玉米出苗率在95%~100%,生产上为节约用水,建议玉米“干播湿出”首次滴灌灌溉量为17.55m^3/666.7m^2,即可保证正常出苗.In order to study the first suitable drip irrigation amount of dry seeding and wet emergence of spring maize in Ningxia irrigation area, with“Tianci 19”as the experimental material, potted cultivation, 7 soil moisture content gradients (10%, 13%, 16%, 19%, 22%, 25%, and 28%) were set with five repetitions, the effects of different water treatments on the seedling emergence time and seedling emergence rate were studied. The results showed that: in sandy loam soil, when the soil moisture content was 10%, the maize seeds could not absorb water and sprout normally;when the soil moisture content was 13%, the emergence rate was only 75%, and it is too low to be applied in actual production;when the soil moisture content was between 16% and 28%, the emergence rate of maize was between 95% and 100%.In order to save water in production, it is suggested that the normal seedling emergence can be guaranteed when the irrigation amount is 17.55m^3/ mu.

关 键 词：玉米 滴灌灌水量 出苗率 

分 类 号：S513[农业科学—作物学]