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首页> 外文期刊>Acta Horticulturae >Impact of reduced irrigation rates on fruit yield and quality in seedless watermelon.
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Impact of reduced irrigation rates on fruit yield and quality in seedless watermelon.

机译：灌溉速度降低对无籽西瓜果实产量和品质的影响。

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Excessive irrigation in watermelon [Citrulus lanatus (Thunb.)] in many vegetable producing areas of the world is frequent due to inadequate irrigation scheduling, resulting in water waste and nutrient leaching. The objective of the study was to evaluate the effects of irrigation rates on soil moisture content, incidence of Phytophthora blight, and fruit yield and quality in watermelon. The experimental design consisted of a randomized complete block with five treatments (irrigation rates (33, 67, 100, 133, and 167% the rate of crop evapotranspiration)) and four replications. We used a seedless watermelon cultivar ('Tri-x 313' as female, and 'Ace' as the pollenizer) that is commonly grown in the southeast US. The experiment was conducted in Tifton, Georgia (sandy loam soil) and Camilla, Georgia (loamy sand soil) in the spring of 2009. The mean volumetric soil moisture content at a soil depth of 10 cm increased with the irrigation rate. The average soil moisture content over the season for the irrigation rates were: 8.5% (33% ET), 10.7% (67% ET), 9.3% (100% ET), 13.1% (133% ET), and 13.6% (167% ET). Fruit yields and average fruit weight were not significantly affected by irrigation rate; however, they tended to be lowest at the lowest irrigation rate (33% ET). Fruit yield and quality of watermelon plants irrigated with 67% ET were similar to those of plants irrigated at higher irrigation rates. The concentration of fruit soluble solids slightly decreased with increasing rates of irrigation. In conclusion, the results suggest that there is potential to reduce the current rates of watermelon irrigation and thus increase the water use efficiency without significantly affecting fruit marketable yields and quality.
机译：由于灌溉计划不充分，在世界许多蔬菜生产地区，西瓜[Citrulus lanatus（Thunb。）]的过度灌溉经常发生，导致浪费水和养分流失。该研究的目的是评估灌溉速率对土壤水分，疫霉疫病的发生率以及西瓜果实产量和品质的影响。实验设计由一个随机的完整块组成，该块具有五种处理方式（灌溉速率（作物蒸散速率分别为33、67、100、133和167％））和四次重复。我们使用了在美国东南部普遍种植的无核西瓜品种（“ Tri-x 313”为雌性，“ Ace”为花粉）。该实验于2009年春季在佐治亚州的Tifton（砂质壤土）和佐治亚州的Camilla（壤质砂土）进行。随着灌溉速率的增加，土壤深度10 cm处的土壤平均体积含水量增加。灌溉季节的平均土壤水分含量为：8.5％（33％ET），10.7％（67％ET），9.3％（100％ET），13.1％（133％ET）和13.6％（ ET（167％）。灌溉速度对果实产量和平均果实重量没有显着影响。然而，在最低灌溉率（ET为33％）时，它们往往最低。用67％ET灌溉的西瓜植株的果实产量和品质与较高灌溉速率下的植株相似。果实可溶性固形物的浓度随灌溉速度的增加而略有下降。总之，结果表明，有可能降低当前的西瓜灌溉速度，从而提高用水效率，而不会显着影响水果的单产和质量。

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