Growth,Fruiting And Benefit Evaluation Of Apple Tree Which Have Different Stion In Baoding Area

Apple dwarfing-closing planting has become the main trend and orientation of modern apple production and development at home and abroad.As the important part of the fruit trees,rootstocks play a important role in regulating the influence and mechanism of rootstock to scion.Since the dwarfing planting is territorial,researchers in different producing areas focus on screening proper stion and evaluation of production performance in local apple dwarfing-closing planting area.As one the advantageous region of apple producing in Heibei province,Baoding has widely developed the apple dwarfing-closing cultivation,but improper stionic combination and managing techniques still exist in production.In the cause of screening the proper stions for planting,improcing planting level,and promoting economic development in Baoding,the growth and fruiting performance,and the state of apple ring spot and rotten disease of different apple stions in Baoding area were studied in this experiment,and the inputs and outputs of them were recorded and analysed all year round.Main results are as follow:1. Both grafted on LS and SH38, The growth vigor of Zhongqiuwang are more vigorous than that of Dahongrong, and Zhongqiuwang are also more sick than Dahongrong in ring spot. The per fruit weight and the soluble solid content of Zhongqiuwang are the most on SH38 inter stock. The per fruit weight, the soluble solid content and soluble solids to acidity ratio of Dahongrong are the most on LS interstock.2. The growth vigor of Tianhong 1 and Tianhong 2 on SH40 interstock are more vigorous than that on SH38 interstock, but the ring spot condition of Tianhong 1 on SH40 are worse than that on SH38, the rotten disease condition of Tianhong 2 on SH40 are worse than that on SH38. The number of spur of Tianhong 2/SH38 and Tianhong 2/SH40 are significantly more than other combination, and the ratio of spur of Tianhong 2/SH38 are the highest with 63.75%. The amount of total branches of Tianhong 1/SH40 are the most, and the number of long shoot and overlength shoot of it are significantly more than other combination. The per fruit weight of each stions are all over 220.0g, and that of Dounan/SH40 are the highest with 402.0g. The stained area of Dounan/SH38 and Dounan/SH40 all reach 100%. The soluble solid content and fruit firmness of Tianhong 2/SH38 and Tianhong 2/SH40 are significantly more than other combination.3. Grafted on SH40 interstock, early-riping cultivars like Xu2-5, Xu2-7, Cinano Red, Mato 1, mid-riping cultivars like Dahongrong, Meiba, Molis and late-riping cultivars like Yueguan are preliminarily determined proper to be planted in baoding area. While among these 10 mid-riping cultivars, Honeycrisp, Cinano Yellow, Cameo are determined unproper to be planted in Baoding area.4. There are findings from the input-output investigation of cultivars like Tianhong 1 grafted on SH38 and SH40 interstocks that fruit bagging costs most, secondly the fruit bag picking. The employees spend and use of pesticide are related to the tree body size. The input-output ratio of Tianhong 2/SH40 is the highest,and Tianhong 2 is suitable to be popularized.5. The tree light conditions of Tianhong 1/SH40 and Tianhong 2/SH40 have significant difference,the tree integrated light transmittance of the two stions in Hejiaying apple orchard is higher than that in Sinanzhuang apple orchard. The integrated light transmittance of Tianhong 2 is higher than that of Tianhong 1 in the same apple orchard.It has significant in population structure and individual structure between dwarf apple formed by Tianhong 2/SH40 with vigorous apple orchard; the light is higher than vigorous apple orchard in horizontal direction, vertical direction has the same result; both of appearance and inner quality showed better.