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l :2003-03-10 Te:孙治强(1956-),男,教授. “:河南省重大科技攻关项目(012201220) K I N 31“孙治强,李胜利,张艳玲(河南农业大学林学园艺学院,河南郑州 450002)K1: V( )V( F)V( )=622 I N H,K 31“.TV ,、T 3Y v, kS =, 3 9F79F,L1“, S U 2.4 kgm-3,V29.5 kgm -3 HrKv.T 39r, 3r | % . H, 3 9F7h ; H, 35T.K 3 Y, B“ (A.yN, I N H, VgA9 !A.1oM: ;I N; ; gms |:S641.2 DS M :A cI|:1001-411X (2004)01-0025-04Relationship between N,P and K application and the growth oftomato seedling sowed in the sawdust-rich substratesSUN Zhi-qiang ,LI Sheng-li, ZHANG Yan-ling(College of Forestry and Horticulture ,Henan Agric.Univ., Zhengzhou 450002, China)Abstract:The relationship between N,P and K application and the growth of tomato seedling sowed in the sub-strates with V(sawdust)V(vermiculate)V(fly-ash)=622 was studied.The results showed that thegrowth of tomato seedling were greatly affected by N , P and N P.Within the test levels, all the growth pa-rameters of tomato seedling increased linearly with the increased application of N and P.The maximum valuesof these parameters were obtained at CO(NH2)2(2.4 kgm-3)+ Ca(H2PO4)2H2O+CaSO4H2O (29.5kgm-3).NP also promoted the growth of tomato seedling , but the effects of P on tomato seedling growthwere based on the level of N application.At low N level, P weakened the growth of tomato seedlings, while athigh N level, P promoted the seedlings growth.K had no significant effects on tomato seedlings growth and thepartial regression coefficients between them were insignificance .So in this substrates, complete nutrients canbe substituted by N and P nutrients.Key words:sawdust;tomato ;seedling substrates;fertilizing v / ,M.d Z TF S “ 8“?Z, 1il. v!A rT#ZEXBt 1, 2 .!A i、 T .yN,eL gZE A. Bt ? z H,!A9,|Bg ( , gA, b 9“ ? | z rT, H Vvv/ 4 3 3, 4 .aZ 5V()V( F)=73T,3 N、P、KKD . 6V( )V ( )=31, N、P!( SY., sv, 1 pgA ivY. k I N $ , g k,) K #I N 31“, v 34 G .25 1 2004 M1 2 j E_A.B“ F,T“BQA, (A. , YI N K1y , kS =g L1“.2.2 I N Y、= K1“YK /1“ T:Y2 = 1.879 +0.246X1 +0.069X2 +0.019X3 -0.031X12 +0.004X22 +0.018X32 + 0.120X1X2 -0.008X1X3 -0.048X2X3 . (2)= K /1“ T:Y3 = 10.205 +0.658X1 +0.173X2 +0.006X3 -0.090X12 -0.037X22 +0.011X32 +0.210X1X2 -0.015X1X3 -0.018X2X3 . (3) K /1“ T:Y4 =123.095 +44.191X1 +9.403X2 -0.150X3 -5.599X12 -1.675X22 +0.588X32 +13.500X1X2 -1.450X1X3 -1.300X2X3 . (4)Z(2)、(3)(4)F_ (rA , E_A, ? LQK Y、= 1“.B“ F,TBQTA,BQA. ,、# TI N Y、= ( vY. kS =, Y、= M1, OL1“.sYI TYy0 T 3 r,TV ,I N Y ( 9F79F,BS = V?9F .T Y、 989r, 3Y | % ( m1、2). H, 、= T, 9F,Y、= v;7 /, 5 9F79F, O YvY= .KDF (CI 1.682 H( U 2.4kgm-3 ,V29.5 kgm-3).2.3 I N 7 K1“ 7 K /1“ T:m1 T YYFig .1 The effects of NP on seedlings stem diameterY5 = 1.285 + 0.480X1 + 0.110X2 +0.005X3 -0.033X12 -0.028X22 +0.002X32 +0.153X1X2 -0.010X1X3 -0.013X2X3 . (5)Z(5)F_rA , E_A.B“ F,T、BQ#T (A, 、# T 7 (vY. kS =,、 7 LM1,BS = V?9F .TBs(m3) V A, /,7 T, 9F,7 /, /,7 5 9F79F.I 1.682( U 2.4 kg/m3)、I 1.682(V29.5 kg/m3) HrKv.m2 T YFig.2 The effects of NP on the seedlings dry mass271 E_A, Z(6) ? LQ K 1“.B“ F_,T=QBQA,BQTA. , 1Y,7 O =Q wL1“(m4), H 9F. L1“.T YY、7 M t .m4 T YFig.4 The effiects of NP on the good seedlings index3 V( )V( F)V( )=622, I N 3 vY. kS =, 3 9F79F, c ,v gg,yN, H,1 j . 6Z, B“ (vK B“ ,K B“ (A, 3YvK,K 3+Y, V ? K M ,7cK(rK 222 mg/kg) V 31.V( )V( F)V( )=622,、TI N 3YA. kS =, 3 9FL9F.T 3r, , 3Y9 . H, 3T, 39F7h ; H, 35 9F79F.K 3+ Y, B“ (A. Ll, I N H, g!A Vr “. k g k H,?CW10 d Hg) 3T t_,yN1l1 H, gW V10 d. ID: 1 k;. v!A J . + j,1979,(1):48-59. 2 k;, ,yy +. v!A J .,1982, 9(3):37-43. 3 , ., ,.Hq/ N0 g J .S v, 1996,(4):16-18. 4 i, b, . NT v g J .S v, 1994,(6):13-15. 5 aZ, , ,.3 KD!Hq J . j,1988,3(3):91-97. 6 , .、( SY J .Z, 1995,(4):23-25. 7 WORRAL R.Composting wood wastes for potting mixes J .Australian Horticulture, 1985,9(2):34-37. 8 BYRNE P J , BCARTY.Development in the measurements ofair-filled porosity of peat substrates J .Acta Horticulturae,1989, (366):257-264. 9 7.r j?sZE M .: S,1983.25-68.【3 I 柴 焰】28 2 j v (1 S )25
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