The Study Of Camellia Oleifera Undergrowth Artificial Growing-grass Tillage Technology

It as become significant obstacles in Camellia oleifera production that Camellia oleiferaoften experience serious loss of soil and water,exposed planting surface and low organic matter content.In this paper,we study growing grass-grass cover,growing grass-buried grass,growing grass-earthing,growing grass and clean tillage these 5 kinds forest land farming treatment effect inCamellia oleiferayoung forest woodland and through investigation and analysis of soil physical and chemical properties and Camellia oleiferatree body growth and development status,in order to explore effective forest land cultivation way in Camellia oleiferayoung forest and provide scientific theoretical guidance for practical production,the main research results are as follows:(1)The growing grass cultivation can improve soil pH value and soil moisture content.The growing grass-grass cover had a noticeable effect on pH value.0-20 cm soil layer is higher than clean tillage 0.32 in December,20-40 cm soil layer is higher than clean tillage 0.37;High temperature and dry season in August had evident effects on the soil moisture content,0-20 cm soil layer soil moisture content is higher than clean tillage 3.97%?5.83%.However,the effect on soil moisture content was not significant in December.(2)Growing grass cultivation has a negative effect on soil volume weight and positive effect on soil porosity.lt has a relatively more noticeable impact on the 0-20cm soil layer than 20-40cm soil layer.Growing grass and clean tillage had significant difference effect on 0-20 cm soil layer soil,volume weight decreased by 0.25 g/cm3?0.36 g/cm3,porosity increased by 9.16%?13.81%;Growing grass-earthing and clean tillage had significant difference effect on 20-40 cm soillayer,volume weight decreased by 0.12 g/cm3?0.20 g/cm3,porosity increased by 4.39%?7.80%.(3)Growing-grass cultivation can improve soil fertility,and the effects on the 0-20 cm soil layer is greater than 20-40 cm soil layer.Growing grass-buried grass and growing grass-earthing cultivation had obvious effects on the improvement of the fertility of soil.Growing grass-buried grass dealing with organic matter,total nitrogen,available phosphorus and available potassium content is better than that of clean tillage respectively 51.41%?161.23%,52.21%?132.39%,132.39%?428.26%and 73.81%?73.81%;Growing grass-earthing processing of soil organic matter,total nitrogen,effective phosphorus and available potassium content is better than that of clean tillage respectively 42.47%?264.66%,41.35%?109.86%and 264.66%?41.35%and 23.32%?141.00%,in which the effect of increase phosphorus and effective potassium is the most obvious.(4)Clean tillage caused the decline of soil fertility.December 0-20 cm soil layer soil total nitrogen,available phosphorus,respectively,compared with June fell by 0.5 g/kg,0.33 mg/kg;20-40 cm soil layer soil organic matter,total nitrogen,effective phosphorus and available potassium content,respectively,compared with June fell by 0.34 g/kg,0.36 g/kg,0.51 mg/kg,3.08 mg/kg.(5)Growing grass cultivation promoted the growth of Camellia oleifera young tree.Growing grass had the most obvious advantages in deal with tree height growth,diameter growth,the crown growth which were respectively higher than clean tillage by 91.67%,90.52%and 113.33%.Growing grass-earthing treatment had significant effect on the spring new shoots,which are respectively higher than clean tillage by 40.00%,33.50%and 16.20%in shoots number,shoots length,shootscoar-eseness.Growing grass-buried grass treatment significantly had influence on summer shoots number,shoots length,shootscoareseness which are respectively higher than clean tillage by 42.21%,29.95%and 24.89%.Growing grass-buried grass treatment obviously had effects on leaf width,leaf length and leaf area which are respectively higher than clean tillage by 15.56%,20.02%,48.76%.Compared with tillage,Grass flower bud number added respectively 42 and 41 after growing grass-buried grass process and growing grass-earthing process.Based on investigation and analysis on Camellia oleiferaforest soil physical and chemical property of growth status of trees,the growing grass-buried grass cultivation tend to be the best cultivation way,and followed by growing grass-earthing,third is growing grass-grass cover,finally is growing grass,however,all the process above are better than clean tillage.