提高主干对乔化“红富士”苹果光合效率和果实产量品质的影响

Effect of Different Improving Stem on the Photosynthetic Efficiency and Yield and Quality of 'Red Fuji' Apple Trees

以陇南山区16年生乔化密植＂红富士＂苹果为试材,研究了不同提高主干处理对树体叶片净光合效率、有效相对光照强度比例、果实产量和品质的影响。结果表明：当主干提升高度≤100cm时,随着主干提升高度的增大,＂红富士＂苹果的叶片净光合效率、有效相对光照强度比例、果实产量和品质显著提高;主干提升高度〉110cm时,随着提升高度的增加,叶片净光合效率、有效相对光照强度比例、果实品质略有增加趋势,但差异不显著。而果实产量开始显著减少;确定出甘肃陇南山区成龄乔砧＂红富士＂苹果栽培中,密度为3m×4m的果园,盛果期树干高为100-110cm是比较理想的优质栽培指标。

Taking‘Red Fuji＇apple trees of 16-year-old as test materials,the effect of different improving stem on the net photosynthetic efficiency,effective relative light intensity,yield and quality were studied.The results showed when the height of stem was≤100cm,with the increasing of stem height that‘Red Fuji＇apple＇s net photosynthetic efficiency,effective relative light intensity,yield and quality significantly increased;When the height of stem was〉110cm,with the increasing of stem height that the net photosynthetic efficiency,effective relative light intensity and quality had a slight increase but no significant differences and the yield began to decrease.When the density was 3m×4m,that the stem height of full fruit period apple was 100-110 cm was a good index of cultivation of adult‘Red Fuji＇apple cultivation in the Longnan mountainous area of Gansu.