喷氯化钙防治苹果苦痘病试验我们乡苹果果实苦痘病（当地称木栓病）普遍发生，为害较重，每年因此而减收２０多万元。此病是一种生理病害。是缺钙引起的。发病初期，多在果实肩部贴近果皮的果肉内产生褐色小点，到后期其扩大至直径１—４ｍｍ，并危及果皮和更深层的果肉，... Spraying Calcium chloride prevention apple bitter pox disease test Our country apples fruit bitter pox disease (locally called cork disease) common occurrence, the damage is heavy, so every year more than 200000 yuan. The disease is a physiological disease. Is caused by calcium deficiency. Early onset, the fruit in the fruit near the peel pulp more brown spots, to the late expansion to a diameter of 1-4mm, and endanger the skin and deeper pulp, ...