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据《Scientia Horticulturae》(2013.05.004)的一篇研究报道,来自突尼斯国家农业研究所的研究人员研究了累积低温对干旱温暖气候下开心果性状的影响。突尼斯开心果主要产在干旱地区,种植面积大,产量低,且年份间差异较大。研究人员研究了冬季低温和年降水量对开心果的影响。试验在一试验园里进行,试验时间为1997—2008年,持续进行12年,试验材料为突尼斯中部最重要的培育品种马特尔。结果表明,开心果产量与年降水量相关性很小,试验区
According to a study by Scientia Horticulturae (2013.05.004), researchers from the National Institute of Agricultural Research in Tunisia studied the effect of accumulated low temperature on pistachio traits in arid and warm climates. The pistachios in Tunisia are mainly produced in arid areas, with large acreage, low yields and large differences between years. Researchers studied the effects of winter low temperature and annual precipitation on pistachios. The test was carried out in a test garden for the period 1997-2008, which lasted 12 years. The test material was Martel, the most important cultivar in central Tunisia. The results show that the correlation between the yield of pistachios and the annual precipitation is very small, the experimental area