This paper summarized the survey in studies of techniques for introducing exogenous DNA into plants and various methods of introduction. This technique has definite potentiality in crop improvement.
本文综述了近年来植物外源dna导入技术概况及各种具体的导入实施方法，指出该技术在作物改良上具有一定的潜力。
The affection is discussed based on the survey data of crop fertilization in farmer households.
根据农户作物施肥的调查数据，讨论种植结构对化肥消费状况的影响。
Based on data analysis and field survey, the study chooses various evaluating indices to finish the research and evaluation on main crop straw in Jilin province.
通过实地调查和文献分析，选择不同的秸秆资源评价指标，对吉林省主要农作物秸秆资源进行了调查和评价。
The front-end system of crop plant diseases and insect pests' ground survey was a very important tool which could continually observe the farm and maintain the survey data.
农作物病虫害地面调查前端系统是对长期田间观察和调查数据维护的重要工具。
We are not tell whether the survey compared last year's organic crop yields with yields from previous years or with those from other synthetic farms this year.
我们不知道调查是不是把去年有机农业的农产品产量与之前年份进行对比，还是与今年其他的合成农业产量进行对比。
It will be mainly used for scientific experiment, land resources survey, crop yield estimates and disaster prevention and reduction, according to the center.
卫星将主要用于科学试验、国土资源普查、农作物估产和防灾减灾等领域。
It will be mainly used for scientific experiment, land resources survey, crop yield estimates and disaster prevention and reduction, according to the center.
卫星将主要用于科学试验、国土资源普查、农作物估产和防灾减灾等领域。
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