我场苗圃每年七、八月间用芽接法来繁殖果树苗。在这个时期正置雨季,往往因接后遇到雨淋和水渍,影响接芽和砧木的愈合,降低嫁接成活率。如一九七一年三队苗圃部分嫁接苗,因为接后受雨淋和短时间的水泡,成活率仅为25％左右。针对这种情况,从事苗圃生产的职工进行座谈,分析原因,认为嫁接技术熟练与否,是其重要关键,但是用麻做接芽包扎物,防雨隔水的性能较差,遇到雨水影响成活率也是一个重要原因。在讨论中提出来塑料膜能防雨隔水,可作实验。于是,一九七一年在三队苗圃做了少量实验,其成活率较高,达到95％以上。为了进一步摸索塑膜作芽接包扎材料的适用性,一九七二年夏季在三队苗圃进行 My field nursery in July and August each year bud method to reproduce the fruit saplings. In this period of time is set rainy season, often after the encounter after the rain and water stains, affecting the bud and rootstock healing, reducing the graft survival rate. For example, in 1973, part of the three nurseries grafted seedlings, because after receiving rain and blisters for a short time, the survival rate was only about 25%. In view of this situation, workers in nursery production to conduct a forum to analyze the reasons that grafting technology is skilled or not, is its key, but with hemp buds dressing, rain waterproof performance is poor, the impact of rain Survival rate is also an important reason. In the discussion made of plastic film can be rain and water can be used for experiments. As a result, a small amount of experiments were conducted in three nurseries in 1971, with a high survival rate of more than 95%. In order to further explore the applicability of plastic film budding materials, in the summer of 1972 in three teams nursery