| Aleurites Montana(Lour.)Wils is an excellent industrial oil tree species and a potential biomass energy tree species.Aleurites Montana is a large deciduous tree with huge crown,dense branches and leaves,and sufficient shade space under the forest.If pure forest is used,the forest ecological resources are not effectively utilized.Crop Intercropping in the forest space can maximize the utilization of land resources and obtain additional economic and ecological benefits.Medicinal herbs of Chinese have high and stable economic benefits,and most of them prefer shade.Interplanting Chinese medicinal herbs under the Aleurites Montanas have unique advantages.At present,there are few related research results on Aleurites Montanas medicine Intercropping in China.In order to explore the specific benefits of planting Chinese medicinal herbs under the Aleurites Montanas.ln this experiment,choosing five shade-tolerant herbal medicines,which are Sarcandra glabra(Thunb.)Nakai,Polygonatum od.oratum(Mill.)Druce,Euchresta japonica Hook.f.ex Regel.,Lonicera japonica Thunb.,Dendranthema morifolium(Ramat.)Tzvel.,etc.And with Aleurites Montanas making up Aleurites montanas+Sarcandra glabra(Thunb.)Nakai(?),Aleurites montanas+Polygonatum odoratum(Mill.)Druce(?),Euchresta japonica Hook.f.ex Regel(?),Aleurites montanas+onicerajaponica Thunb.(?),Aleurites montanas+Dendranthema morifolium(Ramat.)Tzvel.(?),pure forest of Aleurites montanas(?)Six kinds of models were tested to observe seven indexes on the growth of Aleurites montanas,he production of Aleurites montanas,the output value of medicinal materials,the physical properties of soil,the change of soil chemical properties,soil erosion,undergrowth vegetation growth,etc.The comprehensive evaluation method was used for evaluation and analysis,and the following main findings were obtained.(1)The planting model of ?-?have different effects on the growth of the DBH and the annual growth of the annual tree.The annual growth of Aleurites Montana is 17.8m3·hm2·a-1,14.2m3·hm2·a-1,19.7m3·hm2·a-1,19.9m3·hm2·a-1,5.0m3.hm2·a-1,7.9m3·hm2·a-1,the mode ? accumulation amount increases the most,the benefit is the best,the mode ?and II were larger than the other three models(P<0.05).The accumulation of pattern ?Aleurites was significantly lower than that of model ?((P>0.05).There was no significant difference between model ? and model ?(P>0.05).(2)The average fruit yield per plant of Alezurites Monana in the ?-? planting mode are 6.70kg,7.17kg,6.33kg,7.13kg,5.77kg,6.10kg,and the pattern ? and model IV significantly increased the fruiting yield of the Montanas(P<0.05).Among them,mode ? had the best benefit,and mode ? and mode ? are not significantly different from the control(P>0.05),and mode V significantly reduced the fruiting yield compared with the control(P<0.05).(3)In planting mode of ?-?,The average annual output value per hectare of medicinal materials is 12,000 yuan,21,000 yuan,60,000 yuan,108,000 yuan,53,000 yuan.The output value of model IV is the highest,the economic benefit is the best,and other modes.There are a significant difference(P<0.05).(4)The average water conservation capacity of the ?-? model is 1799.7t·hm-2,1760.3t·hm-2,1776.4t·hm2,1707.5t·hm-2,1817.2t hm-2,1680.2t·hm-2,mode I,III,V significantly reduced the soil bulk density of the topsoil and core soil layer(0?40cm),and the soil porosity increased relatively.Compared with the control,the three models of soil water storage capacity was significantly improved(P<0.05).Modes II and IV improve effects on soil bulk density,porosity and water storage capacity,but not significant compared with the control(P>0.05).(5)The average soil erosion of ?-? planting mode is 299.3t·km-2,329.2t·km-2.396.7t·km-2,423.7t·km-2,410.3t·km-2,504.5t·km-2,respectively.mode ?-? significantly reduced soil erosion(p<0.05),and mode I had the strongest soil-solidification,followed by patterns ?,?,?,?.(6)The soil pH value of ?-? planting mode increased slightly,the soil organic matter content increased,and the content of epipedon(0-20cm)was slightly higher than that of the subsoil(20-40cm).Mode ? The total nitrogen content in the epipedonl and subsoilr(0-40cm)of ?,?,? and VI decreased slightly,and the total nitrogen content of soil in model ? increased.Soil epipedon and subsoil(0?40cm)The total phosphoras content of(0?40cm)showed a downward trend;in the epipedon(0?20cm),the total potassium content of the soil in the model ?-? showed a downward trend,and the total potassium content of the model ? and ? showed an upward trend.In the subsoil(20-40cm),the total potassium content of soils in patterns ? and ? showed a downward trend,while the patterns ?,?,? and ? showed an upward trend.(7)In the ?-? planting mode,the uniformity index(Pielou index)shows mode IV>mode ?>mode ?>mode ?>mode ?>mode ?,species diversity index(Shannon-wiener index)Out Mode ?>Mode ?>Mode ?>Mode ?>Mode ?>Mode ?,Simpson index presents Mode ?>Mode ?>Mode ?>Mode ?>Mode ?>Mode ?.(8)According to the seven indicators of growth Aleurites Montanas,fruit bearing amount,medicinal output value,soil physical property,soil chemical property,soil erosion and undergrowth vegetation growth,the comprehensive evaluation method was used to evaluate and analyze the comprehensive benefits ofAleurites montanas+Lonicerajaponica Thunb.and Aleurites montanas+arcandra glabra(Thunb.)Nakail are the highest,which can be promoted and developed in a large area. |
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