不同覆盖栽培模式对烤烟生长发育及产量、质量的影响

为干旱地区寻找较好的烤烟配套栽培措施,在大田条件下,采用随机区组设计,设置地膜覆盖（ck）、稻草覆盖、地膜覆盖＋保水剂、稻草覆盖＋保水剂、前膜后稻草覆盖、麦秆覆盖、裸栽＋保水剂7个处理,研究了覆盖栽培对宁洱烤烟生长发育及产量、质量的影响.试验结果表明：地膜覆盖＋保水剂、地膜覆盖、稻草覆盖、稻革覆盖＋保水剂、前膜后稻草覆盖,可改善烟株生长的环境条件,保湿、保肥、增温效果明显,有效降低烟株生育前期的干旱胁迫,促进烟株早长快发;麦秆覆盖和单施保水剂,随着干旱时间的延长而抗旱作用力减弱,稻草覆盖可有效降低烟叶底烘现象的发生.综合表现以稻草覆盖和稻草覆盖＋保水剂表现较好.

Effect of Different Coverage Cultivation Mode on Growth,Quality and Yield of the Flue-cured Tobacco

To provide the basis for the arid area for planting flue-cured tobacco supporting better,7 treatments of set of plastic film mulching （ck）,straw mulching,plastic film mulching,traw mulching ＋water＋water-retaining agent, straw mulching,straw mulching after film, bare-root ＋ water-retaining were set up by using randomized block design under field conditions,effect of the mulching on Ninger flue-cured tobacco growth, yield and quality were studied, the results showed that：plastic film mulching＋water-retaining agent, plastic film mulching, straw mulching, straw mulching and water retention agent,before the film covered with straw,improved the growth of tobacco plant environmental conditions, the effect of moisture,fertilizer and temperature increased significantly,effective reducing the tobacco growth period of drought stress, promote the tobacco long fast; straw mulching and single application of water-retaining agent,with drought time prolonged drought resistance forces weakened, straw mulching effectively reduced tobacco bottom drying phenomenon,with straw mulching and straw mulching ＋ water- retaining agent had good comprehensive performance.