论文部分内容阅读
“巨峰”葡萄向来以果粒大、糖度高、全果紫红色而深受市场欢迎。近来上海市场上大批劣质“巨峰”葡萄糖度低、酸度高、全果绿色或少数果粒开始转红,却仍以较高的价格出售,消费者望而感叹,询问“巨峰”葡萄品种是否退化了。为什么“巨峰”葡萄品质如此差呢?诚然1987年的天气对葡萄生产是极为不利的,花期低温阴雨,7月份温度也偏低,雨量偏多,属于冷夏天气是会影响葡萄品质的,但更主要的是由于以下四个原因造成的:
“Kyoho” grapes has always been large fruit, high sugar, the whole fruit purple and welcomed by the market. Recently, a large number of inferior “Kyoho” glucose in the Shanghai market were low in acidity. The whole fruit green or few fruit began to turn red, but it was still sold at a higher price. Consumers sigh and asked if the grape variety “Kyoho” degenerated It’s It is true that the weather of 1987 is extremely unfavorable to the grape production. Low temperature and rainy flowering season, low temperature in July and heavy rainfall will affect grape quality in cold and summer weather, but more Mainly due to the following four reasons: