| Castanea henryi is the main woody grain tree species in southwestern Zhejiang province.In Qingyuan County,there are 58,000 acres of Castanopsis.The compound management in the conewood forest land can alleviate the contradiction between agriculture and forestry,and increase the economic income.At present,"Castanea henryi +Polygonatum cyrtonema" forest compound business model in the actual production in a wide range of applications.But the lack of scientific research on the scientific arrangement of Castanopsis and Radix Polygoni Multiflori also lacks systematic research.Therefore,the experiment was conducted with Castanopsis henryi and Polygonatum.The effects of different interplanting densities on the ecological benefits of Castanea mollissima were compared.Effects of Different Planting Patterns on the Growth of Castanea henryi and Polygonum.As well as the economic benefits of different planting patterns.Aimed at screening out the scientific configuration of the compound planting mode.The main findings are as follows:1.The effect of different interplanting density of Castanopsis and Radix Polygoni Multiflora on forest ecological benefit was different.The results showed that the precision of 40%and 60%were more than that of Castanopsis carlesii(CK).There was a difference in the degree of improvement of microbial environment between different sets of species density.Compared with pure forest control,40%interplanting density and 60%interspecies density increased the air humidity of 15.7%and 24.3%.The temperature of the air at 0.5m from the ground is 34.1?,the interplanting density is 40%,the potted plantation is 33.2 ?,and the interplant density is 60%,Are lower than the air temperature in the open field conditions 35.3 ?.In the soil with depths of 0-5 cm and 6-10 cm,the soil temperature under each forest is less than that of open field.Soil enzyme activity and fertility indicators of the overall indicators are showing a certain regularity.With the increase of soil depth,the indexes gradually decreased.The soil enzyme activity and fertility index of all soils were 40%of interplanting density>60%of interplant density>pure forest.The difference was significant(P<0.05).Compared with the pure forest control,40%interplanting density and 60%interplanting density forest land cover increased by 50%and 60%,The species richness index increased by 216%and 324%respectively,while the Shannon-Wiener index increased by 94.7%and 142.1%respectively,and the evenness index decreased by 3.5%and 4.7%.The distribution of surface runoff and soil erosion are pure forest(CK)>40%of interplanting density>Interplanting density 60%.It can be seen that Castanopsis americana has more ecological benefits than pure forest(CK),while the best interplanting density of ecological benefits is 60%.2.Effects of Different Planting Patterns on the Growth of Castanea henryi and Polygonatum.A Comparative Study on the Growth of Polygonatum sibiricum in the Three Patterns of Polygonum multiflorum Thunb.Different planting patterns have different effects on the growth of Polygonatum.The above three kinds of planting patterns of multi-flower yellow fine stems were 94.85cm,106.38cm,103.53cm.The diameter of the ground is 0.82cm,0.93cm,0.88cm,Leaf area size in turn 22.13cm2,32.48cm2,31.63cm2,Polysaccharide content were 23.91%,21.05%and 22.67,Saponin content of 4.7%,3.7%and 3.2%.Which leaves no shade of Polygonatum leaves in July began to gradually,The leaf area of other planting patterns remained essentially unchanged.The seedling density of more than 60%of the flowers was more than 60%,4 times and 2 times.It was found that the growth traits and traits of plant height,stem diameter,leaf area and root growth were higher in the greenhouse cultivation conditions,and the growth rate was higher than that under the no-shade planting conditions Growth Status.A comparative study of the growth of Castanopsis henryi under the three models of Castanopsis fargesii and 40%,60%:After interplanting with many flowers,the growth of Castanea henrya was significantly different.Comparison with pure forest.The growth rate of the fine root of Castanea henryi was increased by 40%and 60%in the two models.And the fine root distribution trend began to move up and outside;The interspecies of different interplanting densities promoted the leaf area,new length,photosynthetic rate and fruit yield of Castanea henryi,Compared with pure forest CK,the length of the results was increased by 23.89%and 17.09%.The results of leaf area increased by 23.07%and 16.92%,Net photosynthetic rate increased by 8.8%and 7.8%,Fruit yield increased by 24%and 16%,And fruit comprehensive quality are better,of which 40%interspecific density of the most prominent.3.A Comparative Study on Economic Benefit of Different Planting Patterns.The annual profit of 40%and no shade of Polyploid was 4090 yuan,3425 yuan,3331 yuan,1883 yuan and 939 yuan,respectively.And the best interplanting density of ecological benefits was 60%of the flower of Polygonatum cuspidatum.The results showed that 60%of the multi-flower hibiscus was the highest in the different planting patterns.In summary,the coniferous plantation under 60%of the multi-flower hibiscus mode is the best combination of Castanopsis and Polygonatum. |
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