不同复合肥配施对KRK26烤烟品种经济性状和烟叶化学品质的影响

Effects of Combined Application of Different Compound Fertilizers on Economic Characters and Chemical Quality of KRK26 Flue-cured Tobacco Varieties

[目的]找出德宏州烟区主栽品种KRK26最佳的肥料配施组合。[方法]采用随机区组设计,设4个处理,T_(1)处理复合肥750.0 kg/hm^(2),氮钾肥300 kg/hm^(2),钙镁磷肥225 kg/hm^(2),硫酸钾375 kg/hm^(2);T_(2)处理复合肥1029.0 kg/hm^(2),氮钾肥300 kg/hm^(2);T_(3)处理复合肥1050.0 kg/hm^(2),氮钾肥225 kg/hm^(2);T_(4)处理复合肥1000.5 kg/hm^(2),硫酸钾270 kg/hm^(2)。[结果]在相同纯氮施用量下,提高磷素施用量对KRK26烤烟品种的株高增加和中部叶开片有促进作用;在德宏州冬春季节种植KRK26品种经济性状最佳的配施组合是T_(1)和T_(2)处理;烟叶化学成分协调性得分最高的配施组合是T_(4)处理;烟叶感官质量最佳的配施组合是T_(1)处理。[结论]在云南省德宏州冬春烟区种植KRK26品种施用复合肥(N∶P_(2)O_(5)∶K 2O=10∶10∶25)750.0 kg/hm^(2),配施氮钾肥(N∶P_(2)O_(5)∶K 2O=15∶0∶30)300.0 kg/hm^(2)、硫酸钾225.0 kg/hm^(2)和钙镁磷肥375.0 kg/hm^(2)是KRK26品种最优的配施组合。

[Objective]To find out the best fertilizer combination for the main flue-cured tobacco variety KRK26 in Dehong tobacco planting area.[Method]A randomized block design was adopted and four treatments were set up.T_(1) treatment included 750.0 kg/hm^(2) compound fertilizer,300 kg/hm^(2) nitrogen and potassium fertilizer,225 kg/hm^(2) calcium magnesium phosphate fertilizer and 375 kg/hm^(2) potassium sulfate;T_(2) treatment was compound fertilizer 1029.0 kg/hm^(2),nitrogen and potassium fertilizer 300 kg/hm^(2);T_(3) treatment was 1050.0 kg/hm^(2) compound fertilizer,225 kg/hm^(2) nitrogen and potassium fertilizer;T_(4) treatment was compound fertilizer 1000.5kg/hm^(2),potassium sulfate 270 kg/hm^(2).[Result]Under the same pure nitrogen application rate,increasing phosphorus application rate could promote the increase of plant height and middle leaf opening of KRK26 flue-cured tobacco varieties.The best combination of economic characters of KRK26 varieties planted in winter and spring in Dehong was T_(1) and T_(2) treatment;T_(4) treatment was the combination with the highest score of chemical composition coordination in tobacco leaves.The best combination of tobacco sensory quality was T_(1) treatment.[Conclusion]When planting KRK26 varieties in winter and spring tobacco areas of Dehong,Yunnan Province,the best combination of KRK26 varieties was 750.0 kg/hm^(2) of compound fertilizer(N∶P_(2)O_(5)∶K 2O=10∶10∶25),300.0 kg/hm^(2) of nitrogen and potassium fertilizer(N∶P_(2)O_(5)∶K 2O=15∶0∶30),225.0 kg/hm^(2) of potassium sulfate and 375.0 kg/hm^(2) of calcium magnesium phosphate fertilizer.