planting index 种植指数(2)   种植指数      ② the cropping system in Hebei is mainly characterized by two cropping a year and cropping systems are tending to be integrated and higher efficient. The planting index increase has resulted in the enlargement of crop sowing area by 1 51 million ha compared with that in 1952;      ②全省稳定了以一年两熟为主体的熟制体系 ,种植模式向复合、高效发展 ,种植指数提高 ,相当于比 1952年扩大播种面积 151 1万hm2 。 短句来源      The problem of forest resource is that the age structure of stand group, the variety of forest and trees are unreasonable,the function of eco-service is low,the accumulation amount is not rich,the forest productivity is low. The measure of perfecting forest eco-system and realizing forest eco-safety is to adjust forest structure, raise planting index .      森林资源主要表现龄组、林种、树种等结构不合理、蓄积量小、林地生产力低等,封山育林、调整林层结构、提高种植指数等措施可逐步健全森林生态系统和实现森林生态安全; 短句来源   “planting index”译为未确定词的双语例句      Drought has caused the most severe loss in all of the meteorological disasters in China. As the population growing, reclamation farmland and planting index increasing, the requirement of agro-water and industrial water increasing, drought will be fearful farther in the global change environment.      随着人口增长、开垦耕地增加和复种指数提高，农业和工业用水需求量都在增大，以及在全球环境变化的大环境下，干旱化趋势还在进一步发展。 短句来源      Total yield of food increasedfrom 202765 ton in 1983 to 313591 ton in 1996 and capita amounts of foodincreased from 625 kg in 1983 to 914 kg in 1996. Commodity amounts andcommodity rate of agricultural products also increased year by year andmarketable rate reached 64 per cent in 1996. Planting index raised from Ill percent in 1975 to 165 per cent in 1999. Secondly, agricultural economy hasachieved rapid development.      农业生产条件逐步改善，农产品总量和人均占有量大幅度提高，粮食总量由1983年的202765吨增加到1996年的313591吨，人均粮食占有量由1983年的625公斤提高到1996年的914公斤。 短句来源      Under the condition of supplementary irrigation during the growing period of wheat and corn with collected rainwater, the yield of crops could be increased remarkably and the planting index could be raised.      利用地头旱井收集径流雨水,在小麦和玉米生育期使用现代化滴喷灌技术补灌,不仅可以显著增加作物产量,而且可以提高复种指数。 短句来源      Seedling nursing and transplanting technique has significant benefit in crop growth because of its effects of early harvest and planting index increment.      作物育苗移栽种植技术因其使作物生长期提前以及能够提高复种指数 ,在农业生产上具有重要意义。 短句来源   相似匹配句对      Planting      种植花木 短句来源      Index      索引 短句来源      index;      指标; 短句来源      The diversity index is higher in the prairie of mixed planting than the prairie of single planting.      混合种植的草地多样性高于单一种植的草地； 短句来源      Simple production structure with planting diversity index from 1.5 to 1.8;      沙区产业结构单一,种植业多样化指数在1.5—1.8之间; 短句来源 查询“planting index”译词为用户自定义的双语例句     我想查看译文中含有：的双语例句 没有找到相关例句 It is possible to plant seeds directly for silviculture using the treated Ash seed in overcutting fields.And before planting the field should be cultivated carefully. The intergraded temperature is about 1200℃ for budding, the suitable planting index is 30—50% of the seeds budded. The suitable temperature for planting is 7℃ the ground temperature is 5℃ and the Soil must be loosen after the emergence of the Ash sapling. 本文对水曲柳在采伐迹地上的直播更新进行了试验研究。播种前种子要进行催芽处理,催芽期间种砂有效积温应达到1200℃以上。催芽的适播指标有30—50％的种子发芽,播种时的适宜气温7℃,地温5℃并保证土壤湿度,复土厚度以2cm为宜,出苗后及时除草松土并满足幼苗的光照条件。对水曲柳采用直播更新比植苗更新具有更多的优越性。 The reactions of the photosynthesis and growth of Panax quinqusfoliuos to the factors of light and temperature were reviewed. Based on the suitable planting index of Panax quinqutheiuos, the ginseng culture fields at Liuba located in the southern slope of Mt. qinling were divided into three zones by elevation. And the relationships between the transmittancy of shade shed and the season. And the slope direction were discussed, being in the three kinds of the ginseng culture fields. 综述西洋参的光合作用，生长对光、温条件的反应特点，依据西洋参种植适宜指数将秦岭南坡留坝县参地按海拔高度分为4种区域．讨论了3类参区荫棚透光率与季节、坡向、海拔间的关系． Cropping system transition from 1949 to 1998 in Hebei province was studied. Results showed that ① changes in cropping structure is directly related to comparative benefit among crops. The decline of cotton area and the increases of soybean and vegetable areas in the last decade were the resulsts of changes in comparative benefits;② the cropping system in Hebei is mainly characterized by two cropping a year and cropping systems are tending to be integrated and higher efficient.The planting index increase... Cropping system transition from 1949 to 1998 in Hebei province was studied. Results showed that ① changes in cropping structure is directly related to comparative benefit among crops. The decline of cotton area and the increases of soybean and vegetable areas in the last decade were the resulsts of changes in comparative benefits;② the cropping system in Hebei is mainly characterized by two cropping a year and cropping systems are tending to be integrated and higher efficient.The planting index increase has resulted in the enlargement of crop sowing area by 1 51 million ha compared with that in 1952;③the directions for crop production in the future are to gain high quality,high efficiency and high yield as well and the goals are to improve the complexity and resource use efficiency. 运用定量与定性相结合的分析方法 ,研究了 194 9～ 1998年河北省种植制度变化轨迹 ,结果表明 :①种植结构变化与作物比较效益直接相关 ,90年代以来全省棉花面积下降、大豆和蔬菜面积上升都是比较效益作用的结果。②全省稳定了以一年两熟为主体的熟制体系 ,种植模式向复合、高效发展 ,种植指数提高 ,相当于比 1952年扩大播种面积 151 1万hm2 。③今后河北省种植业发展的方向是优质、高效 ,并注重高产 ,目标是提高生产系统的复合度和资源利用效率   << 更多相关文摘      相关查询 index) index index ] planting equity index ordinary index solar index small index principle index index subsystem compactness index clumping index

CNKI小工具 在英文学术搜索中查有关planting index的内容 在知识搜索中查有关planting index的内容 在数字搜索中查有关planting index的内容 在概念知识元中查有关planting index的内容 在学术趋势中查有关planting index的内容

CNKI主页 |  设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索

2008 CNKI－中国知网

京ICP证040431号 互联网出版许可证 新出网证(京)字008号 北京市公安局海淀分局 备案号：110 1081725  2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社