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枣树“开甲”也叫环状剥皮,是我国劳动人民在长期生产实践中创造出的一项有效增产措施。据了解山东、河北、河南应用较广,如山东、河北金丝小枣“开甲”后,可提前挂果2—3年,并显著提高产量质量。河南灰枣也一直应用“开甲”,而我省过去应用较少。1983年,省林科所与秸山、定襄、襄汾三县林业局配合,分别对秸山板枣、定襄油荷枣和襄汾
Jujube tree “open armor” is also called ring peeling, is an effective stimulation measures created by our working people in long-term production practice. It is understood that Shandong, Hebei, Henan is widely used, such as Shandong, Hebei jujube “open a”, the fruit can be 2 to 3 years ahead of schedule, and significantly improve yield and quality. Henan gray date has also been applied to “open armor”, while in our province less used in the past. In 1983, the provincial Forestry Branch and straw Hill, Dingxiang, Xiangfen three counties Forestry Bureau, respectively, on the straw board, Dingxiang oil load and Xiangfen