四川南充果农将广柑贮藏于密闭的土窖中，贮藏时间可以达到4～5个月之久；哈尔滨等地利用大窖套小窖的办法，使黄瓜贮存期可达到3个月，这种方法在生物学上称为“自体保藏法”。下列关于“自体保藏法”的说法，错误的是（ ）。
- A.自体保藏法是一种简便的果蔬贮藏法，但其易受外界环境的影响
- B.自体保藏法的原理是依靠果蔬呼吸释放的二氧化碳抑制自身的呼吸作用
- C.在自体保藏法中如能密封控温(1～5摄氏度)，贮藏时间会更长
- D.在密闭环境中，二氧化碳浓度越高，贮藏效果越好
正确答案及解析
正确答案
解析
密闭环境中，二氧化碳的浓度越高，有氧呼吸就被抑制得越彻底，但无氧呼吸的强度也随之增大，无氧呼吸消耗的有机物会更多，其产物酒精还会伤害植物细胞，不利于瓜果蔬菜的贮藏。因此D项错误。
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