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- The dairy industry system is the important component in agriculture ecosystem in China. 农区奶牛业系统是我国农业生态系统的重要组成部分。
- ON THE EVALUATION AND REGULATION OF AGRICULTURAL ECOSYSTEM IN BEIJING DISTRICT. 北京地区农业生态系统的评价与调控问题。
- environment assessment of agriculture ecosystem 农业生态环境评价
- Abstract: Land salinification is an important obstacle in agricultural production and also a primarily environmental problem in agricultural ecosystem. 文章摘要: 土壤盐渍化是河套灌区农业发展的重要障碍性因素，是农田生态系统存在的主要环境问题。
- Abstract : There are so many allelopathies in the vegetable kingdom, and the plant allelopathy has an important influence on agricultural ecosystem. 摘要 ： 化感现象广泛存在于植物界，植物之间的化感作用对生态系统有着不可忽视的影响。
- Stemflow is formed by converging and transferring precipitation and solutes in plant stem,which is of hydrologic and ecological significance in forest and agricultural ecosystem. 茎流是大气降水与溶解物在植物茎干上的汇集与运移,它对森林和农业生态系统具有重要的水文学和生态意义。
- Energy and material change rate and edaphic nutrient content to make clear, increase stock raising investment, can raise agricultural ecosystem significantly yield and benefit. 能量和物质转化率及土壤养分含量表明,增加畜牧业投入,可显著提高农业生态系统的产出和效益。
- Finally,Ziyang county,Yiyang city of Hunan province(ZYH) was case studied with harmony coefficient theory.The result made know that ZYH of agricultural ecosystem is ascending ... 协调是系统发展的重要目标之一,建立系统协调评价模型对客观判定系统状态和促进协调发展是非常重要工作。
- As a kind of important economic insect of agricultural ecosystem, silkworm was usually used as a representative of non-target organism in safety evaluation of pesticides in China. 摘要家蚕是我国农业生态系统中重要的经济昆虫，是农药环境安全性评价的有益生物之一。
- Natural and agricultural ecosystems form a continuum. 自然生态系统和农业生态系统构成一个连续的统一体。
- Longhui county , scoring 5.74 points and belonging to the middle class in the agricultural ecosystem environment aspect, was used as an example to illustrate the evaluation method to the agricultural ecosystem environment. 在农业生态环境评价方面;构建了适宜于山区县农业生态环境评价的指标体系;提出分区划评价原则;以隆回县为例进行了实例分析;结果表明隆回县整体的农业生态环境得5.;74分;属中等等级;
- Lots of environmental monitoring data collected at the plant area indicate that hydrogen sulfide and sulfur dioxide get effective control and the agricultural ecosystem all around presents good cycle. 大量的厂区环境监测数据表明：硫化氢和二氧化硫得到了有效地控制，周围的农业生态达多少了良性循环状态。
- I know nothing about agriculture. 我对农业一窍不通。
- As a new bi-otic component of the ecosystem, released genetically engineered crops initiate a change in the bioticcommunity, the health and the stability of an agricultural ecosystem. 释放后的转基因作物作为生态系统的一种新的生物组分，被引入农田生态系统之后所引发的农田生物群落（包括土壤微生物群落）的变化及其对农业生态系统的健康与稳定产生的影响，已成为研究热点。
- Nitrates are used as fertilizers in agriculture. 硝酸盐在农业上用作肥料。
- All this signs rejuvenation of agriculture. 所有这些都预示着农业将复苏。
- Agriculture in this country has developed greatly after liberation. 解放后这个国家的农业得到了巨大的发展。
- The world food imbalance is a problem of agricultural ecosystems and their management. 世界粮食生产的不平衡是农业生态系统及其管理部门的一个问题。
- Modern agriculture is spoiling our beautiful countryside. 现代农业正在破坏我们美丽的农村。
- agricultural ecosystem forecasting 农业生态预测
