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采用大田小区试验研究了黔北烤烟不同起垄及地膜覆盖方式的保水效果。结果表明,对于单行垄和双行平垄,全生育期盖膜相对于团棵期揭膜不利于雨水向土壤补充,揭膜与否对烤烟的农艺性状和经济性状影响不明显;对于双行凹垄,全生育期盖膜相对团棵期揭膜有利于水分向垄体内补充,有利于保水,对烤烟的农艺性状和经济性状有明显的促进作用。在团棵期揭膜的条件下,双行平垄保水效果和经济性状表现最好;在全生育期盖膜条件下,双行凹垄的集雨和保水效果最好,其农艺性状和经济性状均明显好于其他起垄方式。
Field experiment was conducted to study the water retention effect of different ridge and film mulching methods in flue-cured tobacco in northern Guizhou. The results showed that for single row ridge and double row ridge, the cover film in whole growth period was not conducive to replenishment of rainwater to the soil compared with the uncovering of Tuanzhang period. The uncovering of film or not had no obvious effect on the agronomic and economic characters of flue-cured tobacco. Furrows, the whole growth period of cover film relative to the period of fruiting period is conducive to the water added to the ridge body, is conducive to water retention, the agronomic and economic traits of flue-cured tobacco has a significant role in promoting. Under the conditions of uncovering in double stage, the water retention effect and economic traits of two rows of flat-ridged furrows were the best. Under the condition of covered film during the whole growth period, double-row furrow had the best rainfall-collecting and water-holding effect, and its agronomic characters and economy Traits were significantly better than other ridge ways.