| 摘要: |
| 在不同滴头流量和灌水量条件下对2种不同质地土壤中的滴灌水分分布进行试验研究,通过对土壤湿润峰运移的测定,分析最大横向、纵向湿润直径与滴头流量、灌水量的关系模型,从而确定滴灌设计的滴头间距、流量、灌水历时等参数。结果发现:果园滴灌中,粉质粘土滴水流量以5 L/h为宜,灌水历时6～8 h,滴头间距为90 cm左右;重粉质壤土滴水流量以3 L/h为宜,灌水历时7～9 h,滴头间距为70 cm左右。 |
| 关键词: 滴灌 湿润直径 湿润深度 设计参数 |
| DOI： |
| 分类号:］ |
| 基金项目:国家重点攻关项目“黄土高原南部残塬沟壑区高产型粮果林研究 (淳化)”子专题 (96-004-05-07) |
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| The principles of water distribution and design parameters of drip irrigation in different soils |
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ZHU De lan 1 WANG Zhi nong 2 WANG De xiang 1 ZHU Shou Jun 1 YU Fa jun 3
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| Abstract: |
| Drip irrigation was carried out under the conditions of various flow and irrigation quantity in two kinds of soil.Bymeasuring the shift of soilmoistpeak and the relation among drip irrigation flow, irrigation quantity and maximum moist diameter in the vertical and horizontal directionwere established,which can be expressed asD(H)=(a+bq)Qc.The design parameters of drip irrigation, such as interval distance of dripper, flow and irrigation periodwere also determined in this paper.Theywere 90 cm,5 L /h and 6-8 h respectively in dust clay and were 70 cm, 3 L /h and 7-9 h in heavy dust loam in orchard irrigation. |
| Key words: drip irrigation,moist diameter,moist depth,design parameter |
