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【目的】为探究滴灌带进水压力和铺设长度对灌水均匀度的影响,【方法】以内嵌式滴灌带和薄壁式滴灌带为研究对象,比较了 4 种滴灌带铺设长度和 4 种进水压力下的灌水均匀度。【结果】结果表明,内嵌式滴灌带的灌水均匀度较薄壁式滴灌带表现更好,且更适合于较长距离铺设使用。建立了 2 种滴灌带灌水均匀度与滴灌带铺设长度和进水压力的数学回归模型,并利用回归方程寻优发现内嵌式滴灌带滴灌均匀度达到 0.95 以上的优化铺设长度和进水压力的组合为:铺设长度 60.02~109.94 m,进水压力 0.09~0.2 MPa;薄壁式滴灌带的优化铺设长度和进水压力的组合为:铺设长度 60.05~92.67 m,进水压力 0.05~0.2 MPa。【结论】因此,在设计田间滴灌系统时 2 种滴灌带的铺设长度和进水压力应在上述范围内选取,以保证灌水均匀度满足要求。
【Objective】 In order to explore the influence of drip irrigation water pressure and laying length on irrigation evenness, 【Method】 In-drip irrigation drip irrigation belt and thin-walled drip irrigation irrigation belt were used as research objects. Four kinds of drip irrigation belt laying length and four kinds of drip irrigation belt were compared Irrigation uniformity under water pressure. 【Result】 The results show that the irrigation drip irrigation belt with embedded drip irrigation belt is better than the thin-walled drip irrigation belt, and is more suitable for the laying of longer distance. Two kinds of mathematical regression models of drip irrigation uniformity and drip irrigation belt laying length and water pressure were established and the optimal drifting irrigation length and water pressure of drip irrigation with embedded drip irrigation reached 0.95 The combination length is 60.02 ~ 109.94 m and water pressure is 0.09 ~ 0.2 MPa. The optimal laying length and water pressure of thin-walled drip irrigation belt are as follows: laying length 60.05 ~ 92.67 m, water inlet pressure 0.05 ~ 0.2 MPa. 【Conclusion】 Therefore, when designing the drip irrigation system in the field, the laying length and water inlet pressure of two kinds of drip irrigation tapes should be selected in the above range to ensure the uniformity of irrigation to meet the requirements.