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在季节性干旱十分严重的鄂西南烟区,通过采取不同起垄和覆盖措施对保水效果进行研究。结果表明,双行垄栽培烟叶旺长期和成熟期的集水和保水均具有明显效果,同时对土壤的通气和蒸发影响较大,容易造成一定程度的土壤墒情偏大;单垄全生育期覆膜栽培集水和保水能力都受到了较大的限制;揭膜培土并进行秸秆覆盖可以增加垄体的持水容量和保水能力。
In the southwestern part of Hubei Province where the seasonal drought is very serious, water retention effects were studied by adopting different ridging and covering measures. The results showed that both long-term and long-term ridge tobacco cultivation had significant effects of water harvesting and water retention, and had a significant impact on aeration and evaporation of soil, which could easily lead to a certain degree of soil moisture. Water harvesting and water retention capacity of membrane cultivation are greatly restricted. Removing soil and covering straw with straw can increase the water holding capacity and water holding capacity of the ridge body.