据悉,美国的一项研究成果表明,对梨树施钙能够提高果实质量,延长果实贮藏期限,减少病害损失,增加果实中有效钙的含量。研究人员建议采用下列施钙措施: 一、在夏初生长期间,一般应对梨树直接施3—4次钙。二、在此期间,减少施入氮肥数量及灌溉水量。 It is reported that a United States study shows that the pear on the application of calcium can improve fruit quality, extend the shelf life of fruit, reduce disease damage and increase the content of available calcium in fruit. Researchers recommend the following measures of calcium application: First, during the summer growth period, the general application of pear directly to apply 3-4 times calcium. Second, during this period, reduce the amount of nitrogen fertilizer applied and irrigation water.