主要统计指标解释

农林牧渔业总产值 指以货币表现的农、林、牧、渔业全部产品和对农业生产进行各种支持性服务活动的总量，它反映一定时期内农业生产总规模和总成果。从2003年开始农林牧渔业总产值执行新的国民经济行业分类标准，包括农业、林业、牧业、渔业、 农林牧渔专业及辅助性活动，不再包括农民兼营商品性工业。农林牧渔业总产值中的农、林、牧、渔四业的计算方法通常是按农、林、牧、渔业产品及其副产品的产量分别乘以各自单位产品价格求得，现行价格从2003年开始使用生产价格调查的价格；少数生产周期较长，当年没有产品或产品产量不易统计的，则采用间接方法匡算其产值；然后将四业产品产值与 农林牧渔专业及辅助性活动相加即为农林牧渔业总产值。

粮食产量 指全社会的产量。包括国有经济经营的、集体统一经营的和农民家庭经营的粮食产量，还包括工矿企业办的农场和其他生产单位的产量。粮食除包括稻谷、小麦、玉米、高粱、谷子及其他杂粮外，还包括薯类和豆类。其产量计算方法，豆类按去豆荚后的干豆计算(作为蔬菜食用的青豆列入蔬菜统计)；薯类(包括甘薯和马铃薯，不包括芋头和木薯)1963年以前按每4公斤鲜薯折l公斤粮食计算，从1964年开始改为按5公斤鲜薯折1公斤粮食计算。经请示国家统计局同意,目前江苏的马铃薯已全部列入蔬菜统计,不再作为粮食统计,产量按鲜品计算。其他粮食一律按脱粒后的原粮计算。

油料产量 指全部油料作物的生产量。包括花生、油菜籽、芝麻、向日葵籽、胡麻籽(亚麻籽)和其他油料。不包括大豆、木本油料和野生油料。花生以带壳干花生计算。

棉花产量 指全社会的产量。包括春播棉和夏播棉。产量按皮棉计算。

水产品产量 指人工养殖的水产品和天然生长的水产品的捕捞量。包括海水的鱼类、虾蟹类、贝类和藻类以及内陆水域的鱼类、虾蟹类和贝类，不包括淡水水生植物。

猪、牛、羊肉产量 指当年出栏并已屠宰、除去头蹄下水后带骨肉(即胴体重)的重量。

期初(末)畜禽存栏头(只)数 指报告期初(末)农村各种合作经济组织和国营农场、农民个人、机关、团体、学校、工矿企业、部队等单位以及城镇居民饲养的大牲畜、猪、羊、家禽等畜禽的存栏数。

农作物播种面积 指实际播种或移植有农作物的面积。凡是实际种植有农作物的面积，不论种植在耕地上还是种植在非耕地上，均包括在农作物播种面积中。在播种季节基本结束后，因遭灾而重新改种和补种的农作物面积，也包括在内。

有效灌溉面积 指具有一定的水源，地块比较平整，灌溉工程或设备已经配套，在一般年景下当年能够进行正常灌溉的耕地面积。在一般情况下，有效灌溉面积应等于灌溉工程或设备已经配备，能够进行正常灌溉的水田和水浇地面积之和。

农业机械总动力 指主要用于农、林、牧、渔业的各种动力机械的动力总和。包括耕作机械、排灌机械、收获机械、农用运输机械、植物保护机械、牧业机械、林业机械、渔业机械和其他农业机械［内燃机按引擎马力折成瓦(特)计算、电动机按功率折成瓦(特)计算］。不包括专门用于乡、镇、村、组办工业、基本建设、非农业运输、科学试验和教学等非农业生产方面用的动力机械与作业机械。

Explanatory Notes on Main Statistical Indicators

Gross Output Value of Agriculture,Forestry,Animal Husbandry and Fishery refers to the total value of products of agriculture, forestry，animal husbandry and fishery and total value of various supporting services activities for agriculture, forestry, animal husbandry and fishery, which reflects the total scale and results of agricultural production during a given period.Since 2003,the total output value of agriculture,forestry,animal husbandry and fishery is counted with new classified standard of the national economy,including value of services to agriculture, forestry, animal husbandry and fishery, while excluding the value of industrial output by rural households.Gross output value of agriculture, forestry,animal husbandry,fishery and the value of service industry is obtained by multiplying the output of each product with its price,resulting in the output value of each single item．Since 2003，the current price is used by the investigated production price.For a small number of products,annual output of which is not available or difficult to get due to the long production growing process involved,the output value is estimated through an indirect approach.The sum of output value of all products of agriculture,forestry,animal husbandry,fishery and professional and support activities for them is then equal to the gross output value of agriculture.   Grain Output refers to the grain production in the whole country including grains produced by state farms,collective units, rural families, as well as the output of farms and other production units run by industrial and mining enterprises．Grain includes rice,wheat,corn,sorghum,millet and other miscellaneous grains as well as tubers and beans．Output of beans refer to dry beans without pods．The output of tubers (sweet potatoes and potatoes,not including taros and cassava) was converted with the ratio of 4:1, i.e．4 kilograms of fresh tubers were equivalent to 1 kilogram of grain before 1963.Since 1964 the ratio has been changed to 5:1.Tubers consumed as vegetables(such as potatoes) in cities and suburbs are calculated as fresh vegetables and their output is not included in the output of grain.Output of all other grains refer to husked grain．    Output of Oil-bearing Crops refers to the total production of oil-bearing crops of various kinds, including peanuts,(dry，in shell),rapeseeds，sesame,sunflower seeds,flax seeds,and other oil-bearing crops．Soybeans，oil-bearing woody plants,and wild oil-bearing crops are not included．   Cotton Output refers to the cotton production in the whole country including cotton planted in spring and in autumn．Output is measured as the weight of ginned cotton．    Output of Aquatic Products refers to catches of both artificially cultured and naturally grown aquatic products,including fish,shrimps,crabs and shellfish in sea and inland water as well as seaweed．Freshwater plants are not included．    Output of Pork，Beef,and Mutton refers to the meat of slaughtered hogs,cattle,sheep and goats with head，feet,and offal taken away．    Number ,of Livestock or Poultry in Stock at Beginning/End of Period refers to the total number of large animals,pigs，sheep，fowls，etc．raised by rural cooperative organizations,state farms,rural individuals,government agencies,schools,industrial and mining enterprises,army,and urban residents at the beginning/end of the reference period．    Sown Area of farm Crops refers to area of all land sown or transplanted with crops regardless of being in cultivated area or non-cultivated area．Area of land re-sown due to natural disasters is also included．    Effective Irrigated Area refers to area of land that are effectively irrigated,i.e. relatively level land where there are water source or complete sets of irrigation facilities to lift and move adequate water for irrigation purpose under normal conditions．Under normal conditions，irrigated area of cultivated land is the sum of watered fields and irrigated fields where irrigation systems or equipment have been installed for regular irrigation purpose．    Total Power of Agricultural Machinery refers to total mechanical power of machinery used in agriculture，forestry，animal husbandry and fishery,including ploughing，irrigation and drainage,harvesting，transport，plant protection，stock breeding，forestry and fishery.The power of internal combustion engines is required to convert horsepower into watts and the power of electric motors is required to be converted into watts．Machinery employed for non agricultural purposes,such as the machines used in township-run and village-run industry,construction,non-agricultural transport,scientific experiments and teaching,is excluded．