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作者用壕沟法和随机取样法对红富士苹果幼树根系进行了为期2a(年)的研究。结果表明,在连年秋后改土施肥条件下,根的数量以20-40 cm土层中最多,其次是0-20 cm,其他土层随土层加深呈递减状态;在未改土施肥状况下,根量由浅到深呈递减状态。在20-40cm土层中,年周期内新根总量出现2次高峰,第1次出现在7-8月间,第2次出现在12-1月间。文内还讨论了改土与施肥技术。
The authors conducted a 2a (year) study of the roots of Red Fuji apple trees using the moat method and random sampling method. The results showed that under the condition of soil fertilization after successive autumn, the number of roots was the largest in 20-40 cm soil layer, followed by 0-20 cm, while the other soil layers decreased with the deepening of soil layer. Under no soil improvement fertilization Under the root volume decreased from shallow to deep state. In 20-40 cm soil layer, the total number of new roots in the annual cycle showed two peaks, the first appeared in July-August and the second appeared in 12-January. The article also discusses the soil improvement and fertilization techniques.