摘要
采用“3 1 1 B”最优混合设计 ,对烟草进行氮、钾、镁营养不同施肥配比的田间试验。结果表明 :氮、钾、镁不同配比对烟草产量、产值表现出不同程度的影响 ;计算机寻优得到供试条件下氮、钾、镁最佳配比施肥方案 ,产量方案为 :N 86.4 0 kg/hm2 ,K2 O 4 92 .4 5kg/hm2 ,Mg 1 9.3 5kg/hm2 ;产值方案为 :N 72 .1 5kg/hm2 ,K2 O 52 3 .50 kg/hm2 ,Mg 1 8.0 0 kg/hm2 ;均价方案为 :N 52 .2 0 kg/hm2 ,K2 O 4 1 7.75kg/hm2 ,Mg1 3 .2 0 kg/hm2 ;综合方案为 :N70 .2 5kg/hm2 ,K2 O4 77.90 kg/hm2 ,Mg1 3 .1 0 kg/hm2 。
The optimal compound design(311B) was used to conduct field trail on different ration of Nitrogen,Potassium,Magnesium nutrition of tobacco.The result indicated that the yield and output value of tobacco were affected respectively by the different allocation of N,K 2O,Mg to the different extent.Some optimum allocation schemes of N,K 2O,Mg in the test,were obtained by realityimitaling and optimumsearching with computer.Yield scheme ,N 86 40 kg/hm 2,K 2O 492 45 kg/hm 2,Mg 19 35 kg/hm 2;Output value scheme N 72 15 kg/hm 2,K 2O 523 50 kg/hm 2, Mg 18 00 kg/hm 2;Average price scheme,N 52 20 kg/hm 2,K 2O 417 75 kg/hm 2,Mg 13 20 kg/hm 2;Synthetical scheme,N 70 25 kg/hm 2,K 2O 477 90 kg/hm 2,Mg 13 10 kg/hm 2.
出处
《广西农业生物科学》
CAS
CSCD
2000年第2期77-80,共4页
Journal of Guangxi Agricultural and Biological Science
关键词
氮
钾
镁
烟草
产量
产值
施肥
N
K_2O
Mg
tobacco
yield
output value
