Research On The Three-dimensional Cultivation Model And Technology Of Hazelnut

Hazelnut is one of the most important nut tree species,and it is also a kind of woody oil tree widely planted at present.It is characterized by large grain size,plump shape,and very high yield,rich nutritional value of the kernel,in addition to containing high commercial value.As far as China is concerned,hybrid hazelnut is one of the only cultivation species of large-fruit hazelnut in large-scale cultivation and utilization at present.However,because big fruit hazelnut is perennial woody plant,from young tree to begin hang fruit cycle is longer,pay attention to long-term investment more,accordingly,short-term gain is very little.However,we can adopt a series of reasonable inter planting methods under the forest,which can improve the growth of large fruit hazelnuts,and can improve the soil nutrient conditions,so as to achieve short-term cycle benefits to provide long-term ecological benefits and increase economic income.In view of the above proposed inter planting method under the forest,this study will be 1 year old large hazelnut young forest inter planting dandelion,platycodonopsis grandiflorum and mung bean random area group design,with no interplanting as the control group.We mainly aimed at the large fruit with various physiological and growth indicators of hazelnut seedling and soil physical and chemical properties(C,N,P,etc.)are measured and analyzed its to big fruit hazelnut young forest response of different interplanting way,achieve the goal of preliminary perfect big hazelnut interplanting mode,and on this basis for big fruit hazelnuts cultivation series theory and technical support.The main research results are as follows:(1)Investigation on the growth of interplanting species in the seedling forest of BigberryAfter a detailed investigation of interplanting of hazelnut seedlings,it was found that the coverage of dandelion and platycodon grandiflorum in the experimental plot was relatively high,reaching a peak in September of 93.5%and 80.4%respectively,which would obviously affect the moisture content of soil in the young forest land.Among them,dandelion plant individual is small,its growth height is less than 18cm,and the seedling growth of 1 year big fruit hazelnut cannot produce effective effect.At the beginning of July,the plant height of platycodon grandiflorum and mung bean reached 25.6cm and 36.5cm,respectively.At the end of October,platycodon grandiflorum reached 38.07cm.Among them,mung bean already harvested in August,its growth height is below seedling of big fruit hazelnut of 1 year birth,produce too big effect to big fruit hazelnut growth wrong.(2)The response of soil physical and chemical properties to interplanting forestThe results found that the soil moisture content of dandelion,platycodon grandiflorum and mung bean intercropped was about 28%,26%and 28%lower than that of the control group,respectively.After interplanting,many physical and chemical properties of soil changed obviously.Among them,the physical and chemical properties of the growth were as follows:the field water holdup of 1 year old hazelnut young forest interplanting dandelion was about 96%higher than that of the control group;the field water holdup of 1 year old hazelnut young forest interplanting platycodonopsis grandiflorum and mung bean was about 48%higher than that of the control group and 56%higher than that of the control group,respectively.The soil porosity of dandelion,platycodon grandiflorum and mung bean was increased by 48%,15.5%and 21.7%respectively.The soil bulk density of dandelion,platycodon grandiflorum and mung bean was decreased by 29%,17.2%and 13.4%,respectively,compared with the control group.After interplanting dandelion,platycodon grandiflorum and mung bean,the contents of rapidly available N in soil decreased by 10.77%,15%and 13.49%,respectively.We also found some problems,for example,intercropping had no significant effect on the content change of TP and quick-acting P in soil(P>0.05),which may be because the application of P fertilizer as the base fertilizer before intercropping broke the existing correlation between them.(3)The effect of interplanting on the growth of young hazelnut forestThe investigation and analysis showed that the interplanting of dandelion,platycodonopsis grandiflorum and mung bean in the forest had no significant effect on the seedling height,ground diameter and shoot length of the 1-year big fruit hazelnut.(4)Economic benefit analysis of interplantingBy comparing the cost and purchase price of the interplanting,we compare the production and investment ratio of the interplanting,and analyze the economic benefits of interplanting under the young hazelnut forest.The yield and investment ratio of dandelion was 5.41,platycodon grandiflorum was 5.17,and that of mung bean was 4.17.In terms of the time and times of obtaining benefits,dandelion and mung bean turnover is fast,which can be harvested once in that year,and platycodon grandiflorum is generally cultivated for 2-3 years,but platycodon grandiflorum is a popular dual-use vegetable for medicine and food in the market today,which has certain promotion value in the medicinal value.