新墨西哥州南部和德克萨斯州西部山核桃果园土壤质地和盐度影响的评价

IF 1.5 Q3 AGRONOMY
Akram Ben Ali, Jorge Fernandez, Manoj Shukla
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引用次数: 0

摘要

山核桃[山核桃]是美国西南部一种重要的经济作物,土壤特性、灌溉质量和养分有效性影响着它们的生产。这项研究是在2015年和2016年的生长季节在新墨西哥州南部和德克萨斯州西南部的里约热内卢格兰德河沿岸的六个果园进行的。目的是评估土壤质地、微咸地下水灌溉和氮动态对山核桃果仁率(KP)、坚果长度(NL)和每公斤坚果数(NP)的影响。在2月、6月和10月采集0 ~ 120 cm深度土壤样品,分析电导率(EC)、硝态氮(NO3−)、总凯氏定氮(TKN)和铵态铵(NH4+)。结果表明:2016年10月,法本斯1号果园20 ~ 40 cm深度NO3−浓度最高,为286 mg/kg;而TKN变化较大,0 ~ 20 cm深度NO3−浓度最高,为1067 mg/kg;安东尼果园的NL最长(41.34 mm), NP最低(146 mm), KP最低(53.16%),土壤为壤土,EC为5 dS/m。粘壤土、EC为4 dS/m的Canutillo果园KP最高(57.66%),NL较短(27.94 mm)。低EC的沙质壤土果园坚果产量较高,而高EC的壤土果园坚果产量较高。这些发现强调需要针对特定地点的氮和盐度管理策略来优化山核桃产量和质量。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Assessment of influence of soil texture and salinity in pecan orchards of southern New Mexico and western Texas

Assessment of influence of soil texture and salinity in pecan orchards of southern New Mexico and western Texas

Assessment of influence of soil texture and salinity in pecan orchards of southern New Mexico and western Texas

Assessment of influence of soil texture and salinity in pecan orchards of southern New Mexico and western Texas

Pecans [Carya illinoinensis (Wangenh.) K. Koch] are a significant cash crop in the southwest of the United States, and soil properties, irrigation quality, and nutrient availability influence their production. This study was conducted in six orchards along the Rio Grande River in southern New Mexico and southwest Texas during the 2015 and 2016 growing seasons. The objective was to assess the effects of soil texture, irrigation with brackish groundwater, and nitrogen dynamics on pecan kernel percentage (KP), nut length (NL), and nut number per 1 kg (NP). Soil samples were collected from 0- to 120-cm depth and analyzed for electrical conductivity (EC), nitrate (NO3), total Kjeldahl nitrogen (TKN), and ammonium (NH4+) in February, June, and October. Results showed that NO3 concentrations peaked at 286 mg/kg in October 2016 at 20- to 40-cm depth in Fabens 1 orchard, while TKN varied widely, with the highest value (1067 mg/kg) in Fabens 2 orchard at 0- to 20-cm depth. Anthony orchard, with loamy soil and an EC of 5 dS/m, had the longest NL (41.34 mm), the lowest NP (146), and the lowest KP (53.16%). In contrast, Canutillo orchard, with clay loam soil and an EC of 4 dS/m, had the highest KP (57.66%) but shorter NL (27.94 mm). Orchards in sandy loam soils with lower EC showed higher nut production, while loamy soils with higher EC promoted longer nuts. These findings underscore the need for site-specific nitrogen and salinity management strategies to optimize pecan yield and quality.

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来源期刊
Agrosystems, Geosciences & Environment
Agrosystems, Geosciences & Environment Agricultural and Biological Sciences-Agricultural and Biological Sciences (miscellaneous)
CiteScore
2.60
自引率
0.00%
发文量
80
审稿时长
24 weeks
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