摘要
在甘肃扬黄灌区滴灌水肥一体化栽培模式下,研究了不同灌溉定额和施肥条件下制种玉米的产量表现、水分利用效率和生产效益,结果表明:适宜的灌溉定额和施肥量均有利于制种玉米增产,灌溉定额偏低,制种玉米产量下降;施肥过量,增产效果不再显著。在灌溉定额3 450 m3/hm^2、施N 270 kg/hm^2、P2O590 kg/hm^2、K2O 54 kg/hm^2的水肥条件下,制种玉米比其他处理增产1 395.5～3 600.0 kg/hm^2,水分利用效率增加1.13～9.38 kg/(mm·hm^2),种植纯收益增加7 779.0～21 920.0元/hm^2,产投比增加0.09～1.41。水肥利用效果和种植效益相对优化。
Under the fertigation cultivation mode of drip irrigation in Yellow River irrigated area in Gansu,the yield performance,water use efficiency and production benefits of seed corn were studied.The results show that suitable irrigation quota and fertilizer application are beneficial for increasing yield,the yield of seed corn decreases when the irrigation water is shortage,and the effect of increasing yield is not significant when the fertilizer is applied too much.Under the condition of 3450m^3/hm^2irrigation water quota with fertilizer quantity of 270kg/ hm^2N,90kg/hm^2P2O5 and 54kg/hm^2K20,compared with other treatments,the yield of seed corn is increased by 1395.5~3600.0kg/hm^2, the water use efficiency is improved by 1.13-9.38kg/(mm·hm^2),the net income of planting is increased by 7779.0-21920.0yuan/hm^2, and the ratio of output to investment is increased by 0.09~1.41.The effects of water and fertilizer usage and planting benefit are optimized.
作者
张立勤
车宗贤
崔云玲
崔增团
万伦
ZHANG Li-qin;CHE Zong-Xian;CUI Yun-ling;CUI Zeng-tuan;WAN Lun(Soil and Fertilizer and Water-Saving Institute,Gansu Academy of Agricultural Science,Lanzhou 730070,China;Cultivated Land Quality and Construction Management Station of Gansu,Lanzhou 730020,China)
出处
《节水灌溉》
北大核心
2018年第12期29-32,共4页
Water Saving Irrigation
基金
国家科技支撑计划课题"黄土高原扬黄灌区(宁夏)增粮增效技术研究与示范"(2015BAD22B05)
