【作者】 梁任繁；

【导师】 龙明华； 方锋学；

【作者基本信息】 广西大学 ， 植物营养学， 2004， 硕士

【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/666.7m²）：N 50.00、P₂O₅ 19.37、K₂0 60.00，N 39.88、P₂O₅ 15.60、K₂O 47.19，N 49.03、P₂O₅ 16.15、K₂O 60.00，N 44.99、P₂O₅ 13.37、K₂O 60.00，N 27.43、P₂O₅ 18.65、K₂O 22.20，N 49.63、P₂O₅ 16.14、K₂O 58.65。更多还原

【Abstract】 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 ofdry 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 ofVc , 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.更多还原