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福建全省总耕地面积约1941万亩,其中有水田1571万亩,旱地370万亩.据初步估算,在耕地中高产土壤约占25%,中产土壤40%,低产土壤35%.因此,改良中低产土壤,是提高作物单位面积产量,增加全省粮食总产的有效途径,也是建设高产稳产农田,促进农业现代化建设的一项重要战略措施.一、中低产土壤的类型、分布和特性(一)冷浸型.分布在丘陵、山地的峡谷低洼地.主要土种有冷水田、锈水田、深烂田、浅烂田、青泥田、青底灰泥田等,是我省主要中低产土壤类型之一,以闽西北地区居多.土壤具有“冷、烂、瘦、毒”等不良特性.其表现:
Fujian Province, the total area of about 19410000 acres of arable land, of which 15710000 acres of paddy fields, 3700000 acres of dry land.According to preliminary estimates, in the cultivated land, about 25% of high yielding soil, 40% of middle soil, 35% of low yield soil.Therefore, Middle-low-yield soil is an effective way to increase crop yield per unit area and increase the province’s total grain output, and is also an important strategic measure to build high-yield and stable farmland and promote agricultural modernization. A) cold-immersed type. Distributed in the hilly, mountain canyon low-lying land. The main soil species are cold paddy fields, rust paddy fields, deep rotten fields, shallow rotten fields, green mud fields, green bottom mud fields, etc., One of the types, mostly in northwestern Fujian. Soil has the characteristics of “cold, rotten, lean, poisonous.” Its performance: