栾城万亩方地处县东的城郎公社。地势平坦,壤质土,60厘米以下多出现黑夹层和石灰结核,结构紧实,质地粘重。据多点实测,0—60厘米土层平均容重为1.44g/cm~3,平均田间持水量为22.99%;0—100厘米土层平均容重为1.47g/cm~3,平均田间持水量为22.56%;60—100厘米土层平均容量为1.51g/cm~3。由于土壤含有机质少(1%左右), Luancheng mu square located in the county town of Lang commune. Flat terrain, loamy soil, more than 60 cm black sandwich and lime nodules, compact structure, sticky texture. According to the measured data, the average capacity of 0-60 cm soil layer is 1.44 g / cm ~ 3 and the average field water content is 22.99%. The average bulk density of 0-100 cm soil layer is 1.47 g / cm ~ 3. The average field capacity is 22.56%; the average capacity of 60-100 cm soil layer is 1.51g / cm ~ 3. As the soil contains less organic matter (about 1%)