在渭北干旱地区,有着丰富的野生酸枣资源,用以嫁接繁殖大枣,群众久有习惯。但因每年春、夏嫁接季节,干旱少雨,加之酸枣多生在墒情差的埝边和山坡向阳地段,以致皮层剥离困难,嫁接成活率很低。例如经过多点抽样调查,1971年春、夏两季,彬县太峪公社西街、拜家河两个大队林场嫁接 In the arid area of ​​Weibei, there are abundant resources of wild jujube, which are used for grafting and breeding jujube. However, due to the annual spring and summer grafting season, drought, rainy day, jujube and juvenile habitat in poor conditions and sunny slopes, resulting in cortical peeling difficulties, graft survival rate is very low. For example, after more sample surveys, the spring and summer of 1971, two seasons, Binxian Taiyu Commune West Street, Bajia River two brigade grafting