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首页> 外文期刊>Acta Horticulturae >Effect of nitrogen fertilisation levels on susceptibility of peach trees to Phomopsis amygdali .
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Effect of nitrogen fertilisation levels on susceptibility of peach trees to Phomopsis amygdali .

机译：施氮水平对桃树对扁桃蚜的敏感性的影响。

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摘要

The effect of different levels of nitrogen fertilisation on the susceptibility to peach constriction canker, caused by Phomopsis amygdali, was studied in two potted experiments, established in April 2003 and February 2005. The 'Springcrest' cultivar was used because of its medium susceptibility. Four different nitrogen levels were used: N0 - without nitrogen, N1 - insufficient level, N2 - level considered sufficient, and N3 - excessive level. Plant inoculations with P. amygdali were carried out in November. The canker area around the inoculation sites was measured between January and March of the following year and used as susceptibility assessment. In 2003, the average canker size was much higher than in 2005, which probably shows the effects of temperature and precipitation on canker size. The results show that there is an effect of nitrogen fertilisation on plant vigour and therefore on constriction canker susceptibility. Both N0 and N3 increased the canker area.
机译：在2003年4月和2005年2月建立的两个盆栽试验中研究了不同水平的氮肥水平对扁桃蚜对桃收缩性溃疡的敏感性的影响。使用了“ Springcrest”品种因为它的中等敏感性。使用了四种不同的氮水平：N0-无氮，N1-不足水平，N2-认为足够的水平和N3-过量的水平。用 P接种植物。杏仁核在11月进行。在次年的1月至次年3月之间对接种地点周围的溃疡病地区进行了测量，并将其用作敏感性评估。 2003年，溃疡病的平均规模比2005年要高得多，这很可能说明了温度和降水对溃疡病规模的影响。结果表明，氮肥对植物活力有影响，因此对缩窄性溃疡病敏感性有​​影响。 N0和N3均增加了溃疡面积。

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