滴灌条件下黑土水分湿润特征及对大豆产量的影响  

Wetting Characteristics of Black Soil Moisture and its Influence on Soybean Yield under Drip Irrigation

作　　者：刘伟卓[1,2] 董守坤[1] 赵恩龙[1] 龚振平[1] 马春梅[1] 刘丽君[1] 

机构地区：[1]东北农业大学农学院,哈尔滨150030 [2]黑龙江省科技成果转化中心,哈尔滨150001

出　　处：《大豆科技》2013年第2期13-16,共4页Soybean Science & Technology

基　　金：国家"十二五"科技支撑计划(2012BAD14B06);东北农业大学科技人才启动基金(2009RC57)

摘　　要：为探讨黑土水分湿润特征及滴灌对大豆产量的影响,试验采用静脉输液管为工具模拟水分滴灌,以明确点源供水条件下黑土水分湿润特征,并以此为依据确定合理的滴灌模式。研究结果表明:点源供水条件下黑土水分扩散半径约为20cm。以此为依据,建立了大豆大垄双行滴灌模式,其垄底宽为110cm,垄顶宽70cm,大豆双行间距为40cm;该模式下大豆产量为261.3kg/667m2,与不灌溉相比大豆产量增加73.0kg/667m2,增幅为38.8%,增产效果显著,效益明显大于65cm传统垄作。To examine the influence of Black soil moisture wetting characteristics and drip irrigation on soybean yield, intravenous tubing was used to simulate water drip irrigation, in understanding the water wetting characteristics of Black soil under the condition of point source water supplying and thus determining the reasonable drip irrigation mode. The results showed that the diffusion radius of Black soil moisture was around 20 cm under the condition of point source water supplying. Based on the result, we established soybean drip irrigation mode with wide ridge and double row planting. In the mode, the bottom of the ridge width was 110 cm and the top was 70 cm, and double row spacing was 40 cm. The yield of above mode was 261.3 kg/667m2, and the net yield increase was 73.0 kg/667m2 compared with no irrigation, thus the yield increase rate was 38.8%, which had dramatic yield increasing effect and greater benefits than the traditional of 65 cm spacing.

关 键 词：大豆 滴灌 水分 产量 

分 类 号：S275.6[农业科学—农业水土工程]