Research On The Key Technology Of High-efficiency Close Planting Cultivation Of SH1 Short Stock Apple

SH1 was the indigenous apple dwarf rootstock,but the development was slow in shanxi,so the compare experiment of the key technique on ‘fuji'/ SH1 cultivation with efficient close planting was carried out.The first,the experiment of different branch angle.The branch angle included 70°?90°?110°?130° and no treat.The result showed that the proportion of middle or short branch in all branches reached 83.13%;The dry weight,fresh weight,thickness,area,chlorophyll content of 100 leaves reached respectively 112.47 g,47.83 g,45.70 mm,3485cm2,2.76mg/g;From June to September,the highest photosynthetic rate respectively reached 27.18?mol CO₂/?m²·s??29.71?mol CO2/?m²·s??30.50?mol CO₂/?m²·s??26.56?mol CO₂/?m²·s?,the highest stomatal conductance respectively reached 0.24 mol H₂O/?m²·s??0.25 mol H₂O/?m²·s??0.26 mol H₂O/?m²·s??0.25 mol H₂O/?m²·s?in each month;single fruit weight,fruit shape index,soluble solids content,hardness of fruit respectively reached 236g?0.85?16.12%?9.83 kg/cm²?The second,the experiment of different planting density.The planting density included 1.5 m×4m?2m×4m?2.5 m×4m,The result showed: In the third year,plant height,diameter of tree trunk,crown diameter,shoot length,single fruit weight,coloring area,fruit shape index,soluble solids content,hardness of fruit among each treat has no significant difference,the highest product and economic benefits of each acre in planting spacing 1.5 m×4m was respectively 512.82 kg?2600.16 yuan;In the fifth year,plant height,diameter of tree trunk,crown diameter,shoot length,single fruit weight,coloring area,fruit shape index,soluble solids content,hardness of fruit between 2m×4m and 2.5 m×4m has no significant difference,but they were all higher than that of 1.5 m×4m,the highest product and economic benefits of each acre in planting spacing 2.0m×4m was respectively 2063.38kg?10489.68 yuan.The third,the experiment of different water saving irrigation.The treats included broad irrigation,ridge cover small ditch irrigation,grass cover under the tree.The result showed: the least irrigation amount using ridge cover small ditch irrigation in each year respectively were 0.21min?0.19min?0.2min;the amount of middle or short branch was 385.43?368.22?393,The highest fresh weight of 100 leaves reached 93.4g?92.57g?92.60 g,The highest dry weight of 100 leaves reached 36.70g?35.47g?35.60 g,the highest chlorophyll content reached respectively 0.67 mg/100 g FW?0.65 mg/100 g FW?0.68 mg/100 g FW,single fruit weight,coloring area,fruit shape index,soluble solids content and optimal fruit rate respectivelyreached 250.67g?0.89?87.31%?14.26%,243.12?0.89?88.24%?14.56%,249.47?0.88?8700%?14.60%,so the economic benefits using ridge cover small ditch irrigation was the highest.From above,it concluded that the branch angle 110 °,plant spacing2.0m×4m,ridge cover small ditch irrigation was the optimum cultivation methods for ‘Changfu 2'/ SH1.