Biological Characteristics and Cultivation Techniques of New Actinidia eriantha Cultivar Ganlv No.1
With Ganmi No.6 as control,the main economic characters of Ganlv No.1 were preliminarily identi-fied,and the dynamic changes of fruit quality and sugar and acid contents during fruit growth and development were investigated,in order to provide a theoretical basis for exploring the scientific cultivation methods for reg-ulating the nutritional components of fruits.The results showed that in Fengxin County,Yichun City of Jiangxi Province,Ganlv No.1 was late-maturing with bleeding period in early February,initial flowering period in early May,fading period in mid-May and fruit maturing period in late October.Leaf is in long oval-shape without vil-lous on surface,the flower is a corymb with 3 to 5 single flowers per inflorescence.The color of petals is pink and the anthers is light yellow.The average fruit weight was 46.5 g and the fruit shape index was 2.52.The average content of SSC,DM,TS,TA,As A was 19.40％,21.75％,9.25％,0.94％and 662.6 mg/100 g,re-spectively.The flesh was dark green,tender and sweet flavor.Ganlv No.1 had strong tree vigor,heat and drought resistance,good adaptability,with fruit rich in vitamin C and easy peeling,and excellent comprehensive characters and genetically stable traits.This variety can be cultivated in the areas where the frost-free period is more than 130 days and the accumulated temperature of ≥10 ℃ is more than 1,500 ℃.It is advisable to choose sandy loam soil land with loose,fertile and rich in organic matter soil in pH value of 6.0-7.0,conven-ient irrigation condition,and an altitude of less than 1,000 m to set the orchard.Adult tree orchard is generally fertilized 2-3 times a year.In sprouting period is mainly fertilized with fast-releasing N fertilizer,the fertilizer applied in fruiting stage is mainly fast-releasing P,K and Ca fertilizers,and organic fertilizer is mainly applied in Autumn.Suitable trellis is horizontal large shed frame or T shaped small shed frame.Planting space was(2.5-3.0)m X(3.5-4.0)m,and the ratio of female to male plants was 6-8.Zero bud pruning is applied in budding stage,and thinning and bagging is needed at young fruit stage,adopting single stem double main ten-dril many side tendril shape ways,using long or middle branches clipping method short cut,thin delete and shrink photograph union when winter pruning.The single-trunk double-main vine multi-side vine shaping method is adopted.The medium-long vine pruning method can be used in winter pruning,and the combination of short cut,deletion and retraction can be used.
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