李(Prumus salicina)属于呼吸跃变型果实。在室温条件下，李果实采后不久即发生软化，伴着果实硬度的下降，其原有的风味减退，失去商品价值。国内对李子保鲜的研究多集中在低温贮藏、气调贮藏方面，但对于李子最适宜的低温贮藏温度，国内外一些报道说法不一，但都证明了低温有利于李子的贮藏，不同的李子品种、成熟度、产地等都是贮藏的影响条件，要根据不同李子品种探索适宜的贮藏温度。本试验研究了0℃、3℃、5℃和室温四种贮藏温度对三华李品质指标和表型观察的影响，并且还初步探讨了乙烯吸收剂处理在以上各个温度下对三华李保鲜作用的影响，主要研究结果如下
1.在室温条件下贮藏的三华李，果实采后不久即发生软化，伴着果实硬度的下降，其原有的风味减退，腐烂严重，失去商品价值
2.在0℃、3℃、5℃贮藏的三华李其硬度、TA、TSS 及表型观察都比常温下的要好，说明低温保存有利于三华李的贮藏保鲜，但后期可能由于冷害的出现，风味品质均有所下降。
3．3℃下三华李的贮藏效果最佳，但由于三个低温温度设置的太近，相互之间并没有太大的差别。
Li (Prumus salicina) is a respiratory climacteric fruit. At the condition of room temperature, Li will soften soon after plucking down. Accompanied with the decline of fruit hardness, its original flavor decreased, and the value lossed. Research of Li preservation in domestic is more concentrated in low-temperature storage and gas-storage area, but there are different viewpoints for the most appropriate temperature of Li low-temperature storage in domestic and abroad reports. And it's proved that low-temperature is good for storage of Li, different Li breeds, Maturity, and origin are the impact factor of Li storage. Research the most appropriate temperature of Li storage should accord to the various Li breeds. This experiment studies the impact of Sanhua Li's quality indicator and phenotype observe under four storage temperature 0 ℃, 3 ℃, 5 ℃ and room temperature, and also discusses the impact of Sanhua Li Preservation when dealing with the ethylene absorbers under above temperatures. Following are main research results:
1. At the condition of room temperature, Sanhua Li fruit softened soon after plucking down. Accompanied with the decline of fruit hardness, its original flavor decreased, and the value lossed.
2. At the condition of 0 ℃, 3 ℃, 5 ℃ storage temperature, Sanhua Li's hardness, TA, TSS and phenotypic observation are all better than the room temperature. It's confirmed that low temperature is good for Sanhua Li's preservation, but the Li quality may decline due to the upper cold damage.
3.3 ℃ is the most appropriate temperature for Li preservation, but because three temperatures are too close, there is no obvious difference between the three conditons.
