【作者】 徐祥玉； 袁家富； 赵书军；

【Author】 Xu Xiangyu Yuan Jiafu Zhao Shujun Institute of plant protection and soil science of Hubei agricultural academy of science,wuhan,430064

【机构】 湖北省农业科学院植保土肥所；

【摘要】 通过设置不同施肥方式研究了烟株氮、磷、钾累积动态的影响。结果表明,移栽后30 d 内三种施肥方式烟株养分吸收累积基本一致,移栽后30～63 d 烟株对营养元素的吸收累积方面提前施肥处理>团棵揭膜处理>全生育期覆膜处理。移栽后63～70 d 全生育期覆膜处理与团棵揭膜处理三种营养元素累积量均出现降低现象,提前施肥处理则氮累积没有降低,磷、钾出现降低趋势且降低幅度小于另两处理。移栽后70 d 开始提前施肥处理和全生育期覆膜处理三种养分累积均出现先增加后降低趋势,而团棵揭膜处理则降低。养分最大日累积量方面全生育期覆膜>团棵揭膜>提前施肥处理,但全生育期覆膜最大日累积量出现在移栽后70～77 d,团棵揭膜出现在55～60 d, 提前施肥处理出现在40 d 左右。更多还原

【Abstract】 This research investigated the effect of different fertilization pattern on flue-cured tobacco nitro- gen,phosphorus and potassium accumulation dynamic.The results showed that the nutrients accumulation rule undifferentiated in 30 days after transplant,and C>B>A in nitrogen,phosphorus and potassium ac- cumulation of flue-cured tobacco form 30 days to 63 after transplants,the accumulations reduced form 63days to 70 after transplant on three nutrients in A and B,but C nitrogen accumulation have not reduced. Nutrients accumulation appears the advance increased and behind decreased in C and A,but B only de- creased.A>B>C in nutrient farthest days accumulation capacity,but the farthest days accumulation ca- pacity at days after transplant 70 d-77d in A,55d-60 d in B and around 40d in A.更多还原