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现在,太平洋西北部地区的商业果品生产者,大多数都给苹果和梨树喷施氯化钙或硝酸钙,给梨树喷钙,可增产16%～18%,降低了木栓斑病和苜蓿绿化病的发病率。如苹果不喷钙,某些新品种的等外果率接近50%。研究表明,经常进行钙处理,可增强梨树的耐寒性。在大多数情况下,除了防治疾病外,在生长季节施钙
Nowadays, commercial fruit producers in the northwestern Pacific have sprayed calcium chloride or calcium nitrate into apple trees and pear trees to spray calcium on pear trees, which can increase yields by 16% to 18% The incidence of alfalfa greenery. Such as apple does not spray calcium, some new varieties such as the rate of nearly 50%. Studies have shown that regular calcium treatment can enhance the pear cold tolerance. In most cases, in addition to controlling the disease, calcium is applied during the growing season