| 摘要: |
| 为了了解插入式渗灌灌水器的土壤湿润特性,并确定其插入阻力,通过室内土箱灌水试验,观察、测定了插入式渗灌的湿润锋运移情况及湿润区形状、尺寸等数据资料,同时还通过室内、室外土壤插入试验,对灌水器在不同容重土壤中的插入阻力、插入方法等进行了探讨。结果表明,插入式渗灌的土壤湿润形式类似于点源渗灌和点源地下滴灌,当灌水器出流量为2.0 L/h时,土壤湿润区形状接近球形,在灌水历时为130 min时,土壤湿润区尺寸为:宽×高=30 cm×25 cm;外径15 mm灌水器的插入阻力,在土壤含水率接近饱和时一般不超过15 kg,随着土壤含水率的降低,插入阻力显著增加。试验所用插入式渗灌灌水器的土壤湿润特性和插入阻力,基本可以满足田间使用的要求,但还需进一步降低其插入阻力。 |
| 关键词: 插入式渗灌 湿润锋 插入阻力 |
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| 基金项目:石河子大学工科振兴项目（GKZX200513） |
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| Preliminary research on insert ooze irrigation |
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| Abstract: |
| The paper focused on the preliminary research of the soil wetted pattern and the inserting resistance of the inserting ooze emitter.Through indoor soil infiltration experiment in earth tank,the movement of the wetted front,the shape and size of the wetted zone were observed and measured.The inserting resistance and inserting ways of the emitter in different density soils were also studied through indoor and outdoor emitter inserting experiment.The result showed that the soil infiltration patterns of the insert ooze irrigation were similar to the patterns of point source infiltration irrigation and point source underground drip irrigation;when the emitter flux was 2.0 L/h,the shape of the wetted soil zone was approximate to sphericity,and the size of the wetted soil zone was width×height=30 cm×25 cm;when the soil moisture was close to saturation,the resistance of 15 mm outer diameter emitter generally was below 15 kg.When the soil moisture was lower and lower,the inserting resistance markedly increased.Conclusion could be drawn that the soil wetted pattern and the inserting resistance of the inserting ooze emitter approximately could meet the farm technology need,and the inserting resistance needed to be reduced more. |
| Key words: insert ooze irrigation wetted front inserting resistance |
