可能有不少人以为,积水的果园,树是被涝死的.这种想法是不正确的.事情恰恰相反,因果园积水而致死的果树是被旱死的。当土壤浸泡在水中时,土壤颗粒间孔隙也被水充满,孔隙中的空气被挤出土壤,减少了土壤中空气的含量.由于水分隔绝了植物根系与空气的联系,根系发生严重缺氧,呼吸代谢过程中产生的二氧化碳便开始积累。同时积累的还有一些硫化 There may be many people who think that in the orchard where water is collected, the tree is drowned, which is not true. On the contrary, the fruit trees that died from the accumulation of water in the orchard are drowning. When the soil is soaked in water, the pores between the soil particles are also filled with water, and the air in the pores is pushed out of the soil to reduce the content of air in the soil. Since the water separates the plant root from the air, Carbon dioxide produced during respiratory metabolism begins to accumulate. At the same time there are some accumulation of sulfide