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一、基本情况永定县位于闽西的南部,地处亚热带,属南亚热带至中亚热带过渡带的海洋性季风气候。气候温和,年平均温度18～22℃;雨量充沛,年雨量1500～1800毫米,多集中在夏季,霜期短,无霜期282～322天;全年日照为2024.6小时。全县耕地面积33.75万亩,境内多山,耕地以山田、半山田为多,山田、半山田多为红壤母质发育起来的,长期利用种植水稻,而形成红壤性水稻土。据测定这些土壤,每亩含氮11.5斤,磷7.5斤,钾30斤,土壤pH值5～6。
First, the basic situation Yongding County is located in the southern part of western Fujian, is located in the subtropical zone, is a subtropical to subtropical transitional zone of the maritime monsoon climate. The climate is mild, the average annual temperature is 18 ~ 22 ℃; rainfall is abundant, annual rainfall 1500 ~ 1800 mm, mostly concentrated in the summer, short frost, frost-free period 282 to 322 days; annual sunshine is 2024.6 hours. County area of 3375 acres of arable land, the territory of mountainous, arable land to Yamada, semi-mountain fields for the more, Yamada, mid-field mostly red soil parent material developed, the long-term use of rice, and the formation of red paddy soil. According to the determination of these soils, 11.5 kg of nitrogen per acre, 7.5 kg of phosphorus, 30 kg of potassium, soil pH 5 ~ 6.