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浙江省低丘陵区的山垅田,土壤多属红壤性水稻土。由于冲刷严重,缺乏完善的排灌系统,耕作施肥水平低,土壤理、化、生物性质不良等,肥力很低。目前这些田的年产量每亩仅300斤左右,低的不到200斤;但也有亩产达到800斤以上的事例,说明它们的增产潜力很大。因此,山垅田的改良,是丘陵地区当前农业生产上的重要问题。一、山垅田的类型与特点低丘陵区地形起伏,山凹部分的土壤水分
Zhejiang Province, the hills in the low hills, soil mostly red soil paddy soil. Due to serious erosion, the lack of a sound irrigation and drainage system, low level of tillage and fertilization, soil physical, chemical and biological properties of poor fertility is very low. At present, the annual output of these fields is only about 300 kilograms per mu and the low is less than 200 kilos. However, there are also cases in which the yield per mu is more than 800 kilograms, indicating that they have great potential for increasing production. Therefore, the improvement of Yamada farmland is an important issue in current agricultural production in hilly areas. First, the type and characteristics of Yamada Tian low hilly terrain undulating, concave part of the soil moisture