深耕是农业增产技术措施的中心,只深翻土地,不結合增施肥料是不能达到高额丰产的目的。去年河南省長葛县和尚桥的紅薯深翻試驗地,深翻2.5尺未施底肥,結果和普通翻的同样处理产量相差不大(表1)。而孟排青年試驗(?)在深翻地上增施了大量底肥,每亩紅薯却获得了7,780斤的产量,比和尚桥深翻不施底 Deep plowing is the center of technical measures for increasing agricultural production. Only turning land into deep soil and not using additional fertilizers can not achieve the purpose of high yield. Last year, Henan Province, Changge County, moncler jacken, the bridge deep sweet potato deep plowing test ground, deep 2.5 feet did not apply base fertilizer, the results and the same turnover of the same production or less the same (Table 1). The Menglai Youth Trial (?) Added a large amount of base fertilizer on the deep plowing ground, yielding 7,780 catties per mu of sweet potato, which is lower than that of the monk’s bridge