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甘藷是我县一种主要粮食作物,常年种植面积占粮食作物面积的20%左右。几年来我們調查研究了深耕与壠作对甘藷的增产效果,結果如下:一、深翻地对甘藷增产的作用我县属黃河下游冲积平原,系沙壤土类型。从42处的調查材料看,深翻后破除了硬土层,改善了土壤物理性状,土壤的空隙度、透气性大大增强。据測定粘壤土經过深翻40~60厘米的土壤总孔隙度为55.68%,比
Sweet potato is one of the main grain crops in our county. The annual planting area accounts for about 20% of the area of food crops. In recent years, we investigated the effects of deep plowing and cropping on the yield increase of sweet potato. The results are as follows: First, the effect of deep plowing on sweet potato yielding The county belongs to the alluvial plain of the lower Yellow River and is a sandy loam type. According to the survey data from 42, after deep turning, the hard soil layer is broken, the soil physical properties are improved, the porosity of the soil is greatly enhanced, and the air permeability is greatly enhanced. According to the determination of clay after deep soil turn 40 ~ 60 cm of the total porosity of 55.68% of the soil