不同绿肥品种、种植时间对烤烟农艺性状、产质量及植烟土壤化学成分的影响OACSTPCD

In order to explore the effects of different green manure varieties and planting time on the chemical composition of tobacco-planting soil and the yield and quality of flue-cured tobacco,the small-scale field comparison experiment was conducted in Buga and Sujiayuan Town of Zhaoyang District.The field of planting shining leaf purple flower vetch included three treatments of slack winter season(GCK),sowing on August 5th(G0)and sowing on August 20th(G15).The field of planting ryegrass included three treatments of slack winter season(HCK),sowing on August 5th(H0)and sowing on August 20th(H15).The field of planting radish included three treatments of slack winter season(FCK),sowing on August 5th(F0)and sowing on August 20th(F15).The results showed that planting three green manure varieties,shining leaf purple flower vetch,ryegrass and radish and returning them to the field had a good improvement effect on the agronomic and economic traits of flue-cured tobacco.It had a certain regulative effects on the chemical composition of tobacco-planting soil.The economic characteristics of flue-cured tobacco could be better improved by sowing shining leaf purple flower vetch and ryegrass at the end of mid August locally and returning to the field within 90 days before transplanting the next batch of flue-cured tobacco.The economic characteristics of flue-cured tobacco could be better improved by sowing radishin early August locally and returning to the field within 90 days before transplanting the next batch of flue-cured tobacco.