sown area造句

• Factor analysis model is constructed to analyze variables influencing yield and sown area in grain production
  摘要在建立因子分析模型基础上，本文对中国粮食单产和播种面积的影响因子进行了实证分析。
• A factor analysis model is constructed to analyze variables influencing yield and sown area in grain production
  摘要在建立因子分析模型基础上，本文对中国粮食单产和播种面积的影响因子进行了实证分析。
• Until 1980 , the sown area of japonica rice in our country was only 11 percent of total rice , and the output of it was merely 10 . 76 percent
  直到1980年，我国粳稻种植面积只占水稻的11 ，粳稻产量也仅为稻谷总产量的10 . 76 。
• Given a relatively stable sown area , china can achieve its desired total grain output target if the annual average increase rate of per unit area yield is one percent from 1996 to 2010 and 0 . 7 percent from 2011 to 2030
  在播种面积相对稳定的前提下，只要1996 ? 2010年粮食单产年均递增1 ， 2011 ? 2030年年均递增0 . 7 ，就可以达到预期的粮食总产量目标。
• Sowing areas of inner mongolia changed from low - yield crops to maize , wheat , soybean and potato , in 2001 , total sown areas was 5031 thousand hm2 , grain production was 14 . 285 million tons
  主要农产品的综合供给能力得到提高，农业产值及农民人均纯收入连续增长。主要粮食作物播种面积由以杂粮为主演变为以玉米、小麦、大豆、马铃薯四大作物为主的格局。
• ( 8 ) the most limited factor to the sustainable land use is the water resource , due to the increase of the crop yield and the crop sowing area , so it is important for sustainable land use to decreasing irrig
  门）士地利用变化及其效应的可持续评价表明，曲周县存在的最主要的不可持续因素是耗水作物的大面积种植造成的水资源压力，局部地下水硝态氮和重金属含量超标，对区域的种植结构调整。
• Some scholars argue that when the output of grain falls below a certain amount , there comes the problem of grain security or grain crisis ; or when sown areas of farming land fail below a certain amount , there also comes the problem of grain security in china
  摘要一些学者认为，粮食产量低于一定的数量，就意味着出现了粮食安全问题或者存在粮食危机；播种面积低于一定的数量，意味着中国出现了粮食安全问题。
• At present , the entire area for chinese traditional and herbal medicine sown area amounts to 25 , 000 mu , the chinese goldthread rhizome standardization sown area has amounted to 15 , 000 mu , and 10 chinese goldthread rhizomes chinese traditional medicines bases village have been completed with yearly production 3 , 800 tons
  目前全区中药材种植面积达2 . 5万余亩，其中黄连标准化种植面积已达1 . 5万亩，已建成10个黄连中药材基地村，年产3800吨。
• In recent 20 years , the japonica rice production has been developing relatively fast , by 1990 the sown area of it was 16 per cent of the total area of rice , the output was 17 . 76 per cent of the total output of rice ; in 2001 , they rose to 23 . 13 per cent and 25 . 83 per cent respectively
  近20年来，我国粳稻生产发展较快，到1990年粳稻种植面积已占到水稻的16 ，产量已占到17 . 76 (前人调查) ；到2001年又进一步分别增长到23 . 13和25 . 83 (笔者调查) 。
• Firstly , this paper has to solve the problem of how to separate the data of japonica rice from rice , for until now the authorities has n ' t published japonica rice production statistical data in china . by means of overall survey , typical survey and the collection of correlated statistic materials , this paper calculates the sown area and output of japonica rice of every one of japonica rice production provinces and all over the country , obtains the dates of consumption and trade of japonica rice in china and the world
  本文首先要解决粳稻(米)数据从水稻中剥离的问题，因为直到现在，我国还没有粳稻生产的统计数据，通过全面调查、典型调查和相关统计资料的收集，推算出我国相关各省区的粳稻面积和产量以及全国的粳稻种植面积和产量，得到我国粳米的消费和贸易数据，以及世界粳稻的生产和贸易数据。
• They are agricultural productive materials price growth rate , sown area of grain crops growth rate , grain yield per area growth rate - , natural disaster covered grain areas growth rate , net grain import change rate , grain reserve change rate , population growth rate , per income growth rate , city and town population growth rate , food industry production value growth rate , year - end pig number growth rate , medical & pharmaceutical and textile industry production value growth rate , grain marketization degree , inflation rate using the previous year as base year ( preceding year = 100 ) , public grain purchases price growth rate , investment in agricultural science and technology growth rate , investment in agricultural infrastructure growth rate , growth rate of graduates number from agriculture , forestry , science & technology universities and colleges and specialized secondary schools , government expenditure for agriculture and agricultural credit growth rate , international grain price growth rate , rmb exchange rate growth rate , last grain price growth rate , economic crop price growth rate , , meanwhile , a new method is attempted to be used in this paper and the grain price early - warning problem is transformed into machine learning problem by introducing statistic learning theory and svm method which are gaining popularity in machine learning field at present in the world
  在此基础上，筛选出23个警兆指标：农用生产资料价格增长率、粮食播种面积增长率、粮食单产增长率、粮食受灾面积增长率、粮食净进口量变化率、粮食储备变动率、人口增长率、人均收入增长率、城镇人口增长率、食品工业产值增长率、猪年末头数增长率、医药纺织工业产值增长率、粮食市场化程度、以上年为基年的通货膨胀率、国家粮食定购价格增长率、农业科技投入增长率、农业基础设施投入增长率、农、林、科技高校大、中专毕业生人数增长率、财政支农资金比重及农业信贷增长率、国际粮食市场价格增长率、人民币汇率增长率、上期粮食价格增长率、经济作物价格增长率。同时论文在预警方法上作了新的尝试，把粮食价格预警问题转换成一个机器学习问题，引进当前国际上机器学习领域中比较热门的统计学习理论和支持向量机方法，用顺序回归算法对历史数据进行学习建立了粮食价格预警模型。
• To facilitate domestic grain production and improve grain quality through agricultural restructuring in terms of regional comparative advantages under the background of domestic markets integration and trade liberalization ; 2 . to keep basic arable land from non - farm uses when decreasing grain sown areas , and to increase high value - added crops pr
  摘要4 、充分利用国内国外两个市场、两种资源，提高中国粮食供应的保障程度，改善弱势地区、弱势人口的粮食安全状况，通过扩大粮食进口国的范围，进一步加强粮食安全。
• This research based on the cotton sows area distributes and yield undulate regulation above , then applied " the cotton production from economic prosper region transfers to underdevelopment region " model , and period analysis method and self adapt model etc . , constructing a set of practical productions estimate model or method on compute
  本研究是以上述棉花播种面积分布和单产波动规律为基础，即应用“棉花生产从经济发达地区向经济欠发达地区转移”模型、以及周期分析法和自适应模型等，在计算机上建造而成一套实用的生产预测模型或方法。
• The data in this chapter show the basic conditions of agricultural production and rural economy , including basic statistics on rural areas , basic conditions of agricultural production , sown areas of farm crops , output of farming , forestry , animal husbandry and fishery products , cultivated land , gross output value of farming , forestry , animal husbandry and fishery , output value of agricultural commodities and corresponding commodity rate , and township - owned enterprises
  本章反映我市农业生产和农村经济的基本情况，内容主要包括农村基本情况、农业生产条件与生产情况、农作物播种面积、农林牧渔产品产量、耕地、农林牧渔业产值、农业商品产值和商品率、乡镇企业等方面的统计资料。
• At the first phase , the farmers have no other means to satisfy food demanding , farmers had to increase the sown area , by reclaiming the margin arable land . at the second phase . farmers demand not only the food security but also the profit . they managed to arrange the labour forces , input and farmland use direction wisely
  第二个阶段，农户在稳定粮食生产的基础上，寻求利润最大化，表现为化肥、农药和灌溉等投入的增加，粮食产量提高以及土地利用向高效益的经济作物转移。
• China is the biggest country of rice production and consumption in the world , and the japonica rice industry developing the fastest in the rice industry , by 2001 , the sown area of japonica rice reached 6 , 664 , 200 ha , accounting for 23 . 13 per cent of the rice total sown area , output was 45 . 88 million tons , accounting for 25 . 83 per cent of the total rice output
  我国是世界上最大的稻米生产国和消费国，粳稻是我国水稻中发展最快的产业，到2001年我国粳稻种植面积己达到6664 20千公顷，占水稻种植面积的23 13 ，产量为4587
• Rice is one of the primary grain crops in the world , while the ratio of japonica rice to rice is very low , by 2001 the world sown area of japonica rice was10 , 844 , 860 ha , accounting for 7 . 16 percent of the paddy harvest acreage , and the output of it was 72 . 62 million tons , accounting for 12 . 25 percent of the total rice output
  水稻是世界上重要的粮食作物之一，粳稻在水稻中所占的比重不大， 2001年世界粳稻播种面积为10844 . 86千公顷，占当年稻谷收获面积的7 . 16 ，产量为7261 . 75万吨，占稻谷产量的12 . 25 (笔者根据fao统计资料及其它相关资料推算) 。
• During 1980 - 2001 , the sown area of japonica rice increased 2 . 79 percent per year , the output increased 5 . 42 percent per year , in the contrast , in the same period of time the sown area of rice in china fell by 0 . 77 percent per year , and output increased 1 . 14 per cent per year
  在近年来我国粮食生产效益普遍下滑的大环境下，粳稻生产的收益也有所下降，但粳稻生产的比较效益仍然很高， 1995年我国粳稻生产的税后纯收益分别是早、中、晚舢稻的2 25倍、 l 49倍和l 。