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采用田间试验研究了深沟施肥(40~60 cm土层)对旱地苹果园土壤理化性状的良好影响。结果表明,深沟施肥与对照(20~30 cm土层)相比,40~80 cm土层土壤容重下降为6.1%~16.0%;土壤孔隙度,40~60 cm和60~80 cm土层内增幅为23.0~41.5%;有机质在40~60 cm土层增幅达15.1%,0~100 cm土层平均土壤含水量在旱季比对照果园高4.3个百分点,雨季高3.9个百分点。苹果单株产量和经济效益显著提高20.8%和24%。
Field experiments were conducted to study the effects of deep ditch fertilization (40-60 cm soil layer) on soil physical and chemical properties of dryland apple orchards. The results showed that compared with the control (20 ~ 30 cm soil layer), the soil bulk density decreased from 6.1% to 16.0% in the soil layer of 40 ~ 80 cm soil depth, while the soil porosity, 40 ~ 60 cm and 60 ~ 80 cm soil layer Within 23.0 ~ 41.5%; organic matter increased by 15.1% in 40 ~ 60 cm soil layer; average soil water content in 0 ~ 100 cm soil layer was 4.3% higher in the dry season than in the control orchard and 3.9% in the rainy season. The per plant yield and economic benefits of apples increased significantly by 20.8% and 24%.