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作者在栖霞山区低产旱薄地进行了增产技术研究。结果指出,该类地区甘薯生产尚有很大潜力。通过将土层由不足20厘米加深到40厘米,结合增施肥深施肥,利用抗旱耐瘠品种及其它抗旱保墒措施,充分积蓄和利用深层土壤养分和水分,可抵御一般年份的干旱,取得大幅度增产。经三年在2万余亩地推广应用,亩产由1,586.1公斤增加到2,417.4公斤,增产52.41％。
The author conducted a research on stimulation technology in low-yield drylands in Qixia Mountain. The results indicate that sweet potato production in this area still has great potential. By deepening the soil layer from less than 20 cm to 40 cm, combining fertilization with deep fertilization, utilizing drought-resistant and barren-resistant cultivars and other drought-resistant and moisture-preserving measures to fully accumulate and utilize deep soil nutrients and moisture, it is able to withstand drought in normal years and achieve substantial Increase production. After three years in more than 20,000 acres of land to promote the application of mu produce from 1,586.1 kg to 2,417.4 kg, an increase of 52.41%.