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利用苹果根系与地上部生长之间的高度相关性,提出了测定苹果根系受冻程度的方法。在地上部没有受冻的情况下,于生长期观察树冠的主要形态指标即可准确的确定根系的受冻程度,并规定了鉴别冻害的等级标准。这种方法不仅适用于农业技术、农业化学和其他因子对果树根系冻害影响的田间试验中,而且,在生产条件下,调查并制订受冻果园的恢复措施时也可广泛应用。
Based on the high correlation between root growth and shoot growth in apple, a method of measuring the degree of freezing of apple root system was proposed. In the case of the ground is not frozen, the observation of the main morphological indicators of the crown in the growing period can accurately determine the degree of freezing of the root system and provides for the level of identification of freezing damage standards. This method is not only applicable to field trials of the effects of agricultural technology, agrochemicals and other factors on the frost damage to the roots of fruit trees, but also widely used in the investigation and development of measures for the restoration of frozen orchards under production conditions.