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林牧渔业生产活动进行的各种支持性服务活动的价值总量，它反映一定时期内农林牧渔业生产总规模和总成果。1957年以前的农林牧渔业总产值中包括了厩肥和农民自给性手工业(如农民自制衣服、鞋、袜，自己从事粮食初步加工等)。1958年及以后，林业中增加了村及村以下竹木采伐产值；牧业中取消了厩肥产值；副业中取消了农民自给性手工业产值，增加了村及村以下办的工业产值；渔业中增加了海洋捕捞水产品产值。1980年及以后，在副业中增加了农民家庭兼营工业商品部分的产值。从1984年起村及村以下工业产值划归工业。从1993年起取消副业，将野生动物的捕猎划入牧业，野生植物采集和农民家庭兼营商品性工业划归农业。从2003年起，执行新的国民经济行业分类标准，农林牧渔业总产值中包括了农林牧渔服务业产值，2018年以后农林牧渔服务业产值改称农林牧渔专业及辅助性活动产值。林业中增加了森林采运业产值。农业中取消了家庭兼营商品性工业产值，将野生林产品的采集划归林业。第一、二、三次农业普查以后，根据农业普查结果，对农业、畜牧业、渔业年报数据和农业、畜牧业、渔业产值进行了修订。2010年执行《统计用产品分类目录》，对2009年的农业、林业产值做了相应调整。
农林牧渔业总产值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；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及农林牧渔专业及辅助性活动产值相加即为农林牧渔业总产值。
［耕地］指种植农作物的土地，包括熟地，新开发、复垦、整理地，休闲地（含轮歇地、轮作地）；以种植农作物（含蔬菜）为主，间有零星果树、桑树或其他树木的土地；平均每年能保证收获一季的已垦滩地和海涂。耕地中包括南方宽度＜1.0米，北方宽度＜2.0米固定的沟、渠、路和地坎（埂）；临时种植药材、草皮、花卉、苗木等的耕地，以及其他临时改变用途的耕地。
［农作物播种面积］指日历年度内收获农作物在全部土地（耕地或非耕地）上的播种或移植面积。凡是本年内收获的农作物，无论是本年还是上年播种，都算为播种面积，但不包括本年播种，下年收获的农作物面积。
［农业机械总动力］指全部农业机械动力的额定功率之和。农业机械是指用于种植业、畜牧业、渔业、农产品初加工、农用运输和农田基本建设等活动的机械及设备。农机总动力按使用能源不同分为以下四部分：
柴油发动机动力：指全部柴油发动机额定功率之和；
汽油发动机动力：指全部汽油发动机额定功率之和；
电动机动力：指全部电动机（含潜水电泵的电动机）额定功率之和；
其他机械动力：指采用柴油、汽油、电力之外的其他能源，如水力、风力、煤炭、太阳能等动力机械功率之和。
本指标的统计数据来源于农机部门。
［粮食产量］指日历年度内生产的全部粮食数量。按收获季节包括夏收粮食、早稻和秋收粮食，按作物品种包括谷物、薯类和豆类。其产量计算方法：谷物按脱粒后的原粮计算，豆类按去豆荚后的干豆计算；薯类(包括甘薯和马铃薯，不包括芋头和木薯)1964年以前按每4公斤鲜薯折1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；城市郊区作为蔬菜的薯类(如马铃薯等)按鲜品计算，并且不作粮食统计。1989年以前全国粮食产量数据主要靠全面报表取得，1989年开始使用抽样调查数据。
［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。
［造林面积］指在宜林荒山荒地、宜林沙荒地、无立木林地、疏林地和退耕地等其他宜林地上通过人工措施形成或恢复森林、林木、灌木林的过程。
［人工造林］指在宜林荒山荒地、宜林沙荒地、无立木林地、疏林地和退耕地等其他宜林地上通过播种、植苗和分植来提高森林植被覆被率的技术措施。
［飞播造林］通过飞机播种，并辅以适当的人工措施，在自然力的作用下使其形成森林或灌草植被，提高森林植被覆被率或提高森林植被质量的技术措施。包括荒山飞播造林和飞播营林。
［新封山育林］对宜林地、无立木林地、疏林地或低质低效有林地、灌木林地实施封禁并辅以人工促进手段，使其形成森林或灌草植被或提高林分质量的一项技术措施。包括无林地和疏林地封育以及有林地和灌木林地封育。
［退化林修复］为改善林分的活力和结构，有效遏制防护林退化，提高林分质量和恢复森林功能，对结构失调和稳定性降低、功能退化甚至丧失且自然更新能力弱的林分采取的结构调整、树种替换、补植补播、嫁接复壮等森林经营措施。
［人工更新造林］指在采伐迹地、火烧迹地、林中空地上通过人工造林重新形成森林的过程。包括通过松土除草、平茬或断根复壮、补植补播、除蘖间苗等措施促进目的树种幼苗幼树生长发育的人工促进天然更新。
［肉类总产量］指日历年度内各种牲畜及家禽、兔等动物肉产量总计。猪、牛、羊、马、驴、骡、骆驼肉产量按去掉头蹄下水后带骨肉的胴体重量计算,兔禽肉产量按屠宰后去毛和内脏后的重量计算。猪牛羊禽四个品种肉产量由主要畜禽监测抽样调查获得。
［水产品产量］指渔业（捕捞和养殖）生产活动的最终有效成果，包括全部海水和淡水鱼类、甲壳类（虾、蟹）、贝类、头足类、藻类和其他类渔业产品的最终产量。水产品产量是通过各级水产部门逐级上报取得数据。
Explanatory Notes on Main Statistical Indicators
Total output value of agriculture, forestry, animal husbandry and fishery refers to the total value of all products of agriculture, forestry, animal husbandry and fishery expressed in currency and various supporting service activities for agricultural, forestry, animal husbandry and fishery production activities. It reflects the total scale and total results of agricultural, forestry, animal husbandry and fishery production in a certain period of time. Before 1957, the total output value of agriculture, forestry, animal husbandry and fishery included stable manure and farmers' self-sufficient handicrafts (such as farmers' self-made clothes, shoes and socks, engaged in preliminary grain processing, etc.). In 1958 and after, the output value of bamboo and wood cutting at and below the village was increased in forestry; The output value of stable manure was cancelled in animal husbandry; In the sideline industry, the output value of farmers' self-sufficient handicraft industry has been cancelled, and the industrial output value of village and below village offices has been increased; Fishery has increased the output value of marine fishery products. In 1980 and after, the output value of the part of industrial commodities concurrently operated by peasant families was increased in the sideline industry. Since 1984, the industrial output value of the village and below has been classified as industry. Since 1993, the sideline industry has been abolished, and the hunting of wild animals has been classified as animal husbandry. The collection of wild plants and the commercial industry run by farmers' families have been classified as agriculture. Since 2003, the new industrial classification standard of national economy has been implemented. The total output value of agriculture, forestry, animal husbandry and fishery includes the output value of agriculture, forestry, animal husbandry and fishery service industry. After 2018, the output value of agriculture, forestry, animal husbandry and fishery service industry will be renamed the output value of agriculture, forestry, animal husbandry and fishery specialty and auxiliary activities. The output value of forest mining and transportation industry has been increased in forestry. In agriculture, the output value of commercial industry run by households has been cancelled, and the collection of wild forest products has been classified into forestry. After the first, second and third agricultural census, the annual data of agriculture, animal husbandry and fishery and the output value of agriculture, animal husbandry and fishery were revised according to the results of agricultural census. In 2010, the classified catalogue of statistical products was implemented, and the output value of agriculture and forestry in 2009 was adjusted accordingly.
The total output value of agriculture, forestry, animal husbandry and fishery is usually calculated by multiplying the output of agricultural, forestry, animal husbandry and fishery products and their by-products by their respective unit product prices; If the production cycle is long and there is no product in the current year or the product output is not easy to count, the output value shall be estimated by indirect method; Then, the total output value of agriculture, forestry, animal husbandry and fishery is the sum of the output value of the four industries and the output value of agriculture, forestry, animal husbandry and fishery professional and auxiliary activities.
Cultivated land refers to the land for planting crops, including mature land, newly developed, reclaimed and sorted land, and leisure land (including rotation land and rotation land); Land mainly for planting crops (including vegetables) with sporadic fruit trees, mulberry or other trees; On average, the reclaimed beach and sea beach that can ensure the harvest of one season every year. Cultivated land includes fixed ditches, canals, roads and ridges (ridges) with a width of less than 1.0m in the South and less than 2.0m in the north; Cultivated land for temporary planting of medicinal materials, turf, flowers, seedlings, etc., and other cultivated land for temporary change of purpose.
Sown area of crops refers to the sown or transplanted area of crops harvested on all land (cultivated land or non cultivated land) in the calendar year. All crops harvested in this year, whether sown in this year or last year, are counted as the sown area, but do not include the sown area in this year and the harvested area in the next year.
Total power of agricultural machinery refers to the sum of the rated power of all agricultural machinery. Agricultural machinery refers to machinery and equipment used in planting, animal husbandry, fishery, primary processing of agricultural products, agricultural transportation and farmland capital construction. The total power of agricultural machinery is divided into the following four parts according to different energy sources:
Diesel engine power: refers to the sum of rated power of all diesel engines;
Gasoline engine power: refers to the sum of the rated power of all gasoline engines;
Motor power: refers to the sum of rated power of all motors (including motors of submersible pumps);
Other mechanical power: refers to the sum of mechanical power using other energy sources other than diesel, gasoline and electricity, such as hydraulic power, wind power, coal, solar power and so on.
The statistical data of this indicator comes from the agricultural machinery department.
Grain output refers to the total amount of grain produced in the calendar year. According to the harvest season, it includes summer grain, early rice and autumn grain, and according to crop varieties, it includes Cereals, potatoes and beans. The yield calculation method: grain is calculated according to the raw grain after threshing, and beans are calculated according to the dry beans after pod removal; Before 1964, potato (including sweet potato and potato, excluding taro and cassava) was calculated as 1 kg of grain per 4 kg of fresh potato. Since 1964, it has been calculated as 5 kg of fresh potato per 1 kg of grain; Potatoes (such as potatoes) as vegetables in urban suburbs are calculated as fresh products, and grain statistics are not made. Before 1989, the national grain output data were mainly obtained by comprehensive statements, and the sampling survey data were used in 1989.
Oil production refers to the production of all oil crops. Including peanuts, rapeseed, sesame, sunflower seeds, flaxseed (flaxseed) and other oils. Excluding soybean, woody oil and wild oil. Peanuts are calculated as dried peanuts with shells.
Afforestation area refers to the process of forming or restoring forests, trees and shrubs through artificial measures on barren mountains and wasteland suitable for forestry, sandy wasteland suitable for forestry, forest land without standing trees, open forest land, farmland returned and other forest land suitable for forestry.
Artificial afforestation refers to the technical measures to improve the forest vegetation coverage rate through sowing, seedling planting and sub planting on other suitable forest lands such as barren mountains and wasteland suitable for forestry, sandy wasteland suitable for forestry, non standing forest land, sparse forest land and returned farmland.
Aerial seeding afforestation it is a technical measure to form forest or shrub grass vegetation, improve forest vegetation coverage rate or improve forest vegetation quality under the action of natural forces by sowing by aircraft and supplemented by appropriate artificial measures. Including aerial seeding afforestation and aerial seeding afforestation in barren mountains.
New mountain closure for afforestation it is a technical measure to ban suitable forest land, non standing forest land, sparse forest land, low-quality and low-efficiency forest land and shrub forest land, supplemented by artificial promotion means, so as to form forest or shrub grass vegetation or improve stand quality. Including the enclosure of non forest land and open forest land, as well as the enclosure of forest land and shrub land.
Restoration of degraded forest in order to improve the vitality and structure of the stand, effectively curb the degradation of shelter forest, improve the quality of the stand and restore the forest function, forest management measures such as structural adjustment, tree species replacement, supplementary planting and seeding, grafting and rejuvenation are taken for the stand with structural imbalance, reduced stability, functional degradation or even loss and weak natural regeneration ability.
Artificial reforestation refers to the process of reforestation through artificial afforestation on cutting slash, burning slash and forest hollow land. It includes artificial promotion of natural regeneration to promote the growth and development of seedlings and young trees of target tree species through measures such as soil loosening and weeding, flat stubble or root cutting and rejuvenation, supplementary planting and sowing, tillering and thinning.
Total meat output refers to the total meat output of various livestock, poultry, rabbits and other animals in the calendar year. The meat output of pigs, cattle, sheep, horses, donkeys, mules and camels is calculated according to the carcass weight with bone meat after removing the water from the head and hoof, and the meat output of rabbits and poultry is calculated according to the weight after depilation and viscera after slaughter. The meat yield of four varieties of pigs, cattle, sheep and poultry was obtained from the monitoring sampling survey of main livestock and poultry.
Output of aquatic products refers to the final effective results of fishery (fishing and aquaculture) production activities, including the final output of all marine and freshwater fish, crustaceans (shrimp, crab), shellfish, cephalopods, algae and other fishery products. The output of aquatic products is obtained through the level by level reporting of aquatic products departments at all levels.