【摘要】 通过田间试验研究了采用不同方法和不同剂量施用3种不同保水剂对烟草生长、产量和品质的影响。试验结果表明:3个品种的保水剂均能促进烟株生长,显著地提高烟叶产量,改善烟叶品质,并有利于保持土壤肥力。以施用60 kg/hm2保水剂的增产效果最显著,但施用30~45 kg/hm2的保水剂有利于改善烟叶的品质。在保水剂的3种不同施用方法中,以营养杯法的效果最佳。在供试的3个保水剂品种中,以北京市农科院资源与营养研究所生产的保水剂增产效果最好。更多还原

【Abstract】 The effects of 3 kinds of water-retaining agents applied with different methods and at different doses on the growth,yield and quality of tobacco were studied through field tests.The results showed that all the 3 kinds of water-retaining agents could promote the tobacco growth,obviously enhance the yield of tobacco leaf,and improve the quality of tobacco leaf,and they also were propitious to retaining soil fertility.Applying 60 kg/hm2 water-retaining agent had the most remarkable yield-increasing effect,but applying 30~45 kg/hm2 water-retaining agent was in favor of improving tobacco leaf quality.The nutrient-cup method had the best effect among the 3 different application processes.The water-retaining agent which was produced by Institute of Resources and Nutrition,Beijing Academy of Agricultural Sciences had the best yield-increasing effect among 3 kinds of water-retaining agents.更多还原