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渾水滴灌過(guò)程中不同類型滴頭堵塞的動(dòng)態(tài)變化特征
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國(guó)家自然科學(xué)基金項(xiàng)目（51679205）和國(guó)家重點(diǎn)研發(fā)計(jì)劃項(xiàng)目（2016YFC0400202）


Dynamic Characteristics of Different Emitters Clogging in Drip Irrigation with Muddy Water
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    摘要:

    為了研究滴頭類型對(duì)渾水滴灌滴頭堵塞的影響過(guò)程，選取7種滴頭,、配置2種渾水進(jìn)行周期性間歇灌水試驗(yàn),，提出了滴頭結(jié)構(gòu)系數(shù)指標(biāo),，對(duì)比分析了不同類型滴頭的堵塞狀況,。結(jié)果表明：滴頭類型是影響滴頭堵塞的重要因素,，滴頭結(jié)構(gòu)系數(shù)可作為衡量不同類型滴頭抗堵塞性能的重要指標(biāo),，滴頭抗堵塞性能隨著結(jié)構(gòu)系數(shù)增大而提高,。結(jié)構(gòu)系數(shù)相同的2種不同渾水試驗(yàn)后，圓柱滴頭的平均相對(duì)流量均大于片式滴頭,，當(dāng)結(jié)構(gòu)系數(shù)為2%時(shí),，2種渾水試驗(yàn)后，圓柱滴頭的平均相對(duì)流量分別為91.66%和79.63%,，而片式滴頭的平均相對(duì)流量?jī)H為75.84%和65.08%,；隨著灌水次數(shù)的增加，片式滴頭比圓柱滴頭更容易發(fā)生大部分滴頭整體堵塞現(xiàn)象,；不同類型滴頭堵塞物質(zhì)量隨著結(jié)構(gòu)系數(shù)增大而減小，圓柱滴頭和片式滴頭結(jié)構(gòu)系數(shù)由大到小依次為E1,、E2,、E3和E4、E5,、E7,、E6,2種渾水試驗(yàn)后，滴頭堵塞物質(zhì)量由大到小依次為E3,、E2,、E1和E6、E7,、E5,、E4。

    Abstract:

    In order to explore the influence of emitter type on the process of emitter clogging in drip irrigation with muddy water,，seven kinds of emitters were selected and two kinds of muddy water were allocated for periodic intermittent irrigation tests. Clogging characteristics of different emitters were compared by putting forward the emitter structure coefficient. The results showed that the type of emitter was an important factor affecting the blockage of emitter, and the structure coefficient of emitter could be used as an important index to measure the antiblockage performance of the different emitters. The anti-clogging performance of emitter was increased with the increase of structure coefficient. When the structure coefficients were the same, the relative flow rate of the cylindrical emitter was larger than that of the flat emitter after two different muddy water tests. For example, when the structure coefficient was 2%, the relative flow rate of the cylindrical emitter was 91.66% and 79.63%, respectively. However, the relative flow rate of the flat emitter was only 75.84% and 65.08%. With the increase of irrigation times, the overall blockage of most emitters was more likely to occur in the flat emitters than in the cylindrical emitters. The clogging mass of different emitters was decreased with the increase of structure coefficient. The order of the structure coefficient of cylindrical emitters and flat emitters in descending trend was E1, E2, E3 and E4, E5, E7, E6. However, the order of the emitters clogging mass after two kinds of muddy water tests in descending trend was E3, E2, E1 and E6, E7, E5, E4.

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溫圣林,牛文全,鄔夢(mèng)龍,張文倩,李學(xué)凱,楊小坤.渾水滴灌過(guò)程中不同類型滴頭堵塞的動(dòng)態(tài)變化特征[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2020,51(3):287-294. WEN Shenglin, NIU Wenquan, WU Menglong, ZHANG Wenqian, LI Xuekai, YANG Xiaokun. Dynamic Characteristics of Different Emitters Clogging in Drip Irrigation with Muddy Water[J]. Transactions of the Chinese Society for Agricultural Machinery,2020,51(3):287-294.

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  • 收稿日期:2019-07-28
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  • 在線發(fā)布日期: 2020-03-10
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