氮磷钾对彩色甜椒产量和品质效应的研究
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摘要
本试验以凯肯(Bruninsama)彩色甜椒为试验材料,采用“311-A”最优混合设计,研究氮磷钾对产量与品质的效应,建立相应的回归方程,并根据不同的生产目标,利用电脑软件模拟出不同的最优施肥方案。
     研究表明:
     (1) 三种元素对产量主效应大小次序为K>P>N,对Vc含量主效应大小次序为K>N>P,对总糖含量主效应大小次序为K>N>P,对干物质含量主效应大小次序为N>K>P,对硝酸盐含量主效应大小次序为N>K>P;
     (2) 三种元素对产量交互效应大小次序为NK>NP>PK,对Vc含量交互效应大小次序为NP>NK>PK,对总糖含量交互效应大小次序为NK>NP>PK,对于物质含量交互效应大小次序为NK>PK>NP,对硝酸盐含量交互效应大小次序为NP>NK>PK;
     (3) 三种元素边际产量大小次序为K>P>N,Vc边际含量大小次序为N>K>P,总糖边际含量大小次序为P>K>N,干物质边际含量大小次序为N>P>K,硝酸盐边际含量大小次序为P>K>N;
     (4) 不同的处理组合对彩色甜椒的胡萝卜素、叶绿素、全氮、全磷、全钾的效应没有达到显著水平,但单施氮肥与彩色甜椒的全氮、全钾呈显著线性相关。
     (5) 产量、VC含量、总糖含量、干物质含量、硝酸盐含量及综合目标最优组合为(kg/666.7m~2):N 50.00、P_2O_5 19.37、K_20 60.00,N 39.88、P_2O_5 15.60、K_2O 47.19,N 49.03、P_2O_5 16.15、K_2O 60.00,N 44.99、P_2O_5 13.37、K_2O 60.00,N 27.43、P_2O_5 18.65、K_2O 22.20,N 49.63、P_2O_5 16.14、K_2O 58.65。
This experiment studied the effects of N,P,K on yield and quality of color sweet pepper by means of the "311-A" optimization compound design .The regression equations of the relation with N,P,K and the effects on yield and quality were established. Different optimum combinations of N ,P ,K were established according to different targets by the software on computer.
    The results were showed as follow:
    (l)In terms of main effect on yield, the three kinds of fertilizers were showed in the order as K>P>N.To the content of Vc and total sugar were in the order as K>N>P.But to the contents of dry matter and nitrate were in the order as N>K>P.
    (2)The interactive effects on yield of N,P,K was in the order as NK>NP>PK,and to the content of Vc and nitrate were NP>NK>PK,but to the content of total sugar was showed in the order as NK>NP>PK,and to content of dry matter was NK>PK>NP.
    (3)In terms of effect on boundary yield, the three kinds of fertilizers were showed in a decreasing order. i.e.K>P>N, and N>K>P on boundary content of Vc. But the effect P>K>N on boundary content of total sugar,and nitrate was in the same time,the effect on boundary content of
    
    
    dry matter was N>P>K.
    (4)The effects of different combination of N,P,K fertilizer on carotene, chlorophyll and N,P,K in fruits of color sweet pepper were not significant.The content of total N and total K of color sweet pepper would increase with N high supply.
    (5)The optimum combination of N, P, K fertilizer on yield, content of
    Vc , total sugar, dry matter, nitrate ,and synthesizing targets were
    (kg/666.7m2) N 50.00, P2O51937, K2O 60.00, N 39.88, P2O515.60, K2O 47.19,
    N 49.03 , P2O516.15, K2O 60.00, N 4459, P2O513.37, K2O 60.00, N 27.43, P2O518.65,
    K2O 22.20, N49.63, P2O516.14, K2O 58.65.
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