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近年来,河北省隆尧县发展红富士苹果树近5万亩,多数采用3×5m的株行距。自1990年部分果园在合理施肥、浇水、防治病虫害及整形修剪的基础上,辅之施用适量生长调节剂多效唑(PP_(333)),取得了三年见果、四年有产量、五年进入盛果期,并保持连年增产的明显效果。 一、施用方法 (一)土施:在垂直树冠下挖20cm宽、20cm深的沟浇树冠一周,把适量的多效唑水溶液浇入后,渗后覆土。或在树干基部挖10cm深的环形沟,施后覆土。
In recent years, Longyao County, Hebei Province, the development of nearly 50000 acres of Red Fuji apple trees, the majority of 3 × 5m line spacing. Since 1990, part of the orchards on the basis of rational fertilization, watering, pest control and plastic pruning, supplemented with the appropriate amount of growth regulator paclobutrazol (PP_ (333)), has achieved three years of fruit, four years of production, five years Into the fruitful period, and maintain the obvious effect of increasing production year after year. First, the application method (A) soil facilities: dig in the vertical crown 20cm wide, 20cm deep ditch canopy crown a week, the amount of paclobutrazol water solution poured into the soil after seepage. Or in the trunk base digging 10cm deep annular groove, Shi Tu soil after.