冷烂稻田(亦称冷浸田),包括烂泥田、冷泉田、锈水田、返浆田,它是闽北山区的主要低产水田土壤类型之一。顺昌县全部水田中,一大半属于冷烂稻田,约占全县低产田的3/4。这类低产田土壤多分布在山区山垄狭谷及部分平原洼地,直接受到山垄的自然气候和水文地质环境的影响,构成“四低、三高、二短、一长”(气温、水温、土温、有效养分低,地下水位、海拔、湿度高,日照、土壤发育期短,霜期长)的低产因素,使土壤中水、肥、气、热与水稻生理要求不相协调,水稻生长发育不良,一年大多只种一季晚稻,单产很低,高者300—400斤,大部分只有200斤上下,甚至几十斤,不及洋 Cold-rotted paddy fields (also known as cold-dip fields), including muddy fields, cold spring fields, rusty paddy fields, back to the pulp fields, it is the northern Fujian mountainous areas of one of the major low-yield paddy soil types. All paddy fields in Shunchang County are mostly cold and rotten paddy fields, accounting for about 3/4 of the low-yielding fields in the county. Such low-yielding soils are mostly distributed in mountain ridge narrow valleys and parts of plain depressions, which are directly affected by the natural climate and hydrogeological environment of mountain ridge, and constitute “four low, three high, two short and one long” (temperature, water temperature , Soil temperature, low available nutrients, groundwater level, high altitude, high humidity, sunshine, short soil development period and long frost period), which made the water, fertilizer, gas and heat in the soil incompatible with the physiological requirements of rice and the growth of rice Dysplasia, mostly only one season a year late rice, yields are low, the highest 300-400 pounds, most of them only 200 pounds up and down, or even a few pounds, less than foreign