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2009—2011年,以辽宁省大连、抚顺、本溪市的3个6～7年生平欧杂交榛园的达维品种为试材,分析了不同生育期叶片氮、磷、钾、钙、镁含量。结果表明,在年生育周期,平欧杂交榛叶片氮、磷含量总体呈下降趋势,钾含量在5月底降至最低,随后又有所回升;氮、磷、钾、钙、镁含量在6月末至8月中旬变化幅度不大;8月上旬、中旬,氮、磷、钾含量相对稳定,是平欧杂交榛叶片营养诊断分析的适宜取样时间;丰产榛园的叶片营养状况优于低产园,但2个丰产榛园产量的高低与叶片主要营养元素含量水平似无明显关联。
The contents of nitrogen, phosphorus, potassium, calcium and magnesium in different growth stages of leaves of three hybrids of Haemonchia hybrids in Dalian, Fushun and Benxi from 2009 to 2011 were analyzed. . The results showed that in the annual growth cycle, the content of nitrogen and phosphorus in hybrid hazel leaves of Pingou decreased overall, and the content of potassium decreased to the lowest at the end of May, then rose again. The contents of nitrogen, phosphorus, potassium, calcium and magnesium were lower at the end of June The change of the content of nitrogen, phosphorus and potassium was relatively stable in early August and mid-August, which was the appropriate sampling time for nutrition diagnosis and analysis of hybrid hazelnut leaves in Pingou. The nutritional status of leaves in high yield hazel garden was better than that in low- However, the yield of two high-yield hazel fields did not seem to be significantly correlated with the level of major nutrient elements in leaves.