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滴灌模式和灌水下限對甜瓜耗水量和產(chǎn)量的影響?yīng)?/div>
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Drip Irrigation Model and Irrigation Start Point on Water Consumption and Yield of Sweet Melon
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    摘要:

    以膜下滴灌（MDI）,、地表滴灌（DI）和地下滴灌（SDI）3種滴灌模式與4種不同灌水下限組合,，在我國西北地區(qū)進(jìn)行了滴灌模式和灌水下限對甜瓜耗水量和產(chǎn)量影響的試驗(yàn)研究,。結(jié)果表明：同一灌水下限下,，MDI較DI平均增產(chǎn)16.0%,，較SDI平均增產(chǎn)7.5%,，SDI較DI平均增產(chǎn)7.9%,，3種滴灌模式的單產(chǎn)均高于當(dāng)?shù)氐孛婀喔鹊膯萎a(chǎn)（40.97 t/hm2）,；DI耗水量最大（平均239.3mm）,，SDI次之（平均217.3 mm）,，MDI最小（平均193.0 mm）,。同一滴灌模式下：伸蔓期灌水下限為60%田間持水量的處理較灌水下限為40%田間持水量的處理平均增產(chǎn)21.0%,，耗水量平均增加9.2%；果實(shí)膨大期灌水下限為80%田間持水量的處理較灌水下限為70%田間持水量的處理平均增產(chǎn)9.3%，耗水量平均增加6.7%,。甜瓜各生育階段適宜土壤含水率下限(占田間持水量的百分比)分別為：苗期65%,，伸蔓和開花坐果期60%，果實(shí)膨大期

    Abstract:

    80%,，成熟期55%,。The field experiment was conducted to investigate the effect of irrigation models (drip irrigation under plastic mulching (MDI), drip irrigation (DI) and subsurface drip irrigation (SDI)) and irrigation start point on water consumption and yield of sweet melon. The results showed that under the same irrigation start point: MDI increased the yield by 16.0% compared with DI; MDI increased the yield by 7.5% compared with SDI; SDI increased the yield by 7.9% compared with DI. The average water consumption for MDI, SDI and DI were 193.0mm, 217.3mm, 239.3mm respectively. Under the same drip irrigation model, the treatment of irrigation start point of 60% field capacity in extension vine and flowering fruit stage, yield increased by 21.0% compared with the treatment of 40% field capacity; the treatment of irrigation start point of 80% field capacity in fruitage stage, yield increased by 9.3% compared with the treatment of 70% field capacity. The appropriate irrigation start points (the percentage of field capacity) for the sweet melon were: seedling stage (65%), extension vine and flowering fruit stage (60%), fruitage stage (80%), mature stage (55%).

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王洪源,李光永.滴灌模式和灌水下限對甜瓜耗水量和產(chǎn)量的影響?yīng)琜J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2010,41(5):47-51. Drip Irrigation Model and Irrigation Start Point on Water Consumption and Yield of Sweet Melon[J]. Transactions of the Chinese Society for Agricultural Machinery,2010,41(5):47-51.

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