| This paper mainly studies the eucalyptus intercropping mould agricultural.The pattern adopt eucalyptus agriculture intercropping the important make for width line (takes an eucalypt to cultivate way) exactly from east to west,And carry out regular agriculture cultivation in forest belt room, Study on the fact that compound systematic eucalypt growth situation,living things measure aspect such as characteristic,productivity's to intercropping,Seek out some one or of eucalyptus agriculture intercropping that output, living things measure comparatively highly pattern. Reach the following conclusion:(1)Research results relevant to characteristics of eucalyptus growth in the mode of four-year-old big wide line of mixed agricultural intercropping have shown that:Preservation rate of Eucalyptus,tree height.chest diameter, timber volume of single plant begin to increase with the growth of belt distance under the same spacing in the rows, Coefficient of variation, Volume per unit area begin to decrease with the increase of belt distance under the same spacing in the rows.Each growth index of mixed agriculture in the configuration mode of (14m+1.3m)×1.25m surpass three kind of control and other configuration mode. Tree height,chest diameter,timber volume of single plant,volume per unit area were respectively:14.1m,12.3cm,0.0752m3,78.6287 m3/h m2,respectively higher than control(CK3):51.6%,4.2%,98.6%,27.1%.It turn out to provide probability in order to implement mixed agricultural work.. Cnfiguration mode of volume per unit area under the circumstances of 4m,6m,8m are all significantly higher than three kinds of control,respectively 4.7983 m3/hm2-117.1808 m3/hm2,respectively higher than control:20.9%-89.5%,Above all,it provide probability aim at working on. pure forestry.(2) The biomass characteristic comparison of the Eucalyptus research result shows that:Seven kinds of configuration model tests of eucalyptus average individual components with ground biomass of increased with distance,There are such a law:Wå¹²>Wçš®>Wæž>Wå¶,Among the largest amount to a mode of (14m+1.3m)×1.25m,it is 78.48 Kg/strains,be bigger 57.02% compared with contrast;among in (8m+1.3m)×1.25m,(14m+1.3m)×0.8m,(14m+1.3m)×1.0m,(16m+1.3m)×0.8m four models are bigger than 10.2% above compared with contrast;The model of (8m+1.3m)×0.8m,(8m+1.3m)×1.0m is bigger than 10.9%,2.5% compared with contrast. Forest tree layer to take from biomass for 8 meters of ground biomass allocation modes,the biggest Configuration mode is (8m+1.3m)×0.8m, achieve 114728Kg/hm2.In the whole distance 8m> 16m> 14m >contrast, Appear strong regularity.The ground biomass in three years of seven kinds allocation modes is bigger than 7.2%-56.15% compared with contrast.The results show that:the contents as branches and leave of Eucalyptus accrued with the increase of belts distance in the different Cultivation patterns; and it accrued with the increase of plant spacing at the same belts distance Various cropping patterns in Eucalyptus canopy compared with the control showed a serious "partial crown" phenomenon,the biomass of outer band crown was larger than the inner ones by 25.35%-308.45%.But the increment became smaller with the increase of spacing distance.It was obviously lower concerning about minimum canopy height of Broadband line eucalyptus compared with the control, it had been proved that the crown heights of broadband lines Eucalyptus was longer than the control.Trunk biomass vertical distribution results show that:the configuration mode and dry biomass tree bark is mainly distributed in high 1/2 below, each mode in the same layer of eucalyptus biomass are shown as strains increase spaced trend of increase, With the increase of plant, bark and spacing trunk percentage increase somewhat,in this test strains of biomass has significant effects on the trunk spacing.It could be seen four models in 14m and 16m band distances were stable from structural characteristics of biomass, three kinds of cropping patterns in 8m band distances were significantly different.There existed significantly different productivity of eucalyptus between different cropping patterns.It also tended to ascend along with the increased spacing.The productivity of 8m from the cropping patterns was the highest outputs.the aggregate output were higher than the control by 33.42%-56.13%.seven kinds of configuration modes of trunk,bark,branches were respectively higher than average productivity 39.01%,32.27%,45.21%,the total higher than 31.56%;seven kinds of eucalyptus plantation configuration models significantly higher productivity,respectively 56.13%,36.92%,33.42%,18.81%,7.7%,9.43%,15.98%.That big wide strip line for. eucalyptus biomass accumulation model,With the distance of 8m allocation modes,this is the highest with the ideal configuration mode,suitable for promotion. |
