经济作物

This course offers a basic understanding on morphology structure and function, the injury on crop of Acari by light microscopy and scanning electron microscopy practical operation.

本实习目的，让学生利用光学显微镜及扫瞄式电子显微镜认识基本之蟎蜱外部形态构造及功能，与观察蟎类对重要经济作物的为害特徵。

Therefore, the use of apomixis also holds great promise as an essential tool for plants sustainable agricultural production and economic crops improvement in the 21 century.

无融合生殖在作物育种上之贡献为能迅速稳定杂种优势并降低杂交种子的生产成本，得以在 21 世纪应用无融合生殖於农业和经济作物改良。

Peanut (Arachis hypogaea L.) is an important oil and cash crop worldwide and has been an important resource of edible oil and protein in many developing countries.

花生是世界上重要的油料和经济作物，是众多发展中国家重要的油脂、蛋白质来源。

Areca is the second largest cash crops in Hainan Province.

在我国海南省，槟榔是第二大经济作物。

It is vital for building modern village to develop areca industry. Areca is a high-profitable tropical crop in Hainan.

槟榔是海南省重要的热带高效经济作物，到2010年，海南岛槟榔原料产值可达30多亿元。

Areca is one of the economic crop that cultivated widely in Hainan,in recent years acreage and economic efficiency continuously improve ,It become agricultural one of the main products.

是海南广泛种植的经济作物，近年来种植面积和经济效益不断提高，成为了海南热带高效农业的主要产品之一。

The thesis is based on income question, forest coverage rate and grop production.to beging with, date envelopment analysis is proved that it can be applicated into grain for green in shan-bei district, and then in view of the fact, seven esential factors which have influence on the project are found out: expense of dam, expense of crop,expense of cash tree ,expense of defense tree,other economic crop,expense of grass and graziery;and the output factors include:income of gdp,pure income per captia,the area of decreasing land loss,graziery income ,crop production,income of tree,the totle income of economic crop.after the date of each facts are puted into dea model,unefficiencial decision making units found.the data that are got through adjusting unefficiencial dmus dy dea can offer guide in shanbei district upgrading of an industrial structure.at the same time ,taking into account some possible problems in or after grain for green in shan-bei district,the thesis bring out some propesal to improve the circumstance,enhance the life level and putthe relation of population,resource and circumstance into a healthy orbit.

论文以解决陕北地区的收入问题，植被问题以及粮食产量问题为出发点，首先从理论上分析了包络分析方法在陕北地区退耕还林中运用的可行性，然后结合陕北地区目前的实际情况，综合分析出影响陕北地区退耕还林的关键的七个因素作为输入指标：水利水保设施投入，农作物投入，经济林种支出，防护林支出，其它经济作物，草类支出，畜牧业投入；以退耕还林所要解决的最终问题作为输出指标：GDP收入、农民人均纯收入、水土流失减少量、牧业总产值、粮食产量、林业总产值、其他经济作物总产值。将各指标所对应的数据代入模型后，通过分析求解得出非有效的决策单元，再运用包络分析方法的一些基本原理对非有效的决策单元进行调整，由此所得的数据对陕北地区的实际投入具有很好的指导意义。同时，又针对陕北地区在退耕还林过程中以及之后可能面临的困境，提出了一些建议和对策。最终使得陕北地区的投资环境尽快得以改善，使农民尽快脱贫致富，使人口、资源、环境的关系尽快纳入良性循环的轨道上。

As a result,farmers are forced to plant "cash crops",like coffee,tea,cocoa,nuts and tobacco that are sold abroad in order to pay off the country's debts.

因此，他们强迫农民种植&经济作物&，如咖啡、茶叶、可可、坚果和烟草。他们把这些经济作物在国外销售，以偿还债务。

Dong Feng county pushs policy of rural industry structural adjustment actively, below the premise of crop of main stable grain, according to the demand of benefit and market, each villages and towns enlarged the area of the economic crop such as melon dish, oil plants, beet, fruit appropriately, expand stock raising production energetically, make full use of existing commissariat straw is changed, develop ox, pig, birds to wait energetically, crop of 7 old economy and cultivate birds advocate the economic pattern that produces a division already formed embryo.

东丰县积极推进农村产业结构调整政策，在基本稳定粮食产量的前提下，根据效益和市场的需求，各乡镇适当扩大了瓜菜、油料、甜菜、水果等经济作物的面积，大力发展畜牧业生产，充分利用现有的粮食秸秆转化，大力发展牛、猪、禽等，七大经济作物及畜禽主产区的经济格局已形成雏型。

A proper proportion of nitrate nitrogen fertilizer is added in the speciality compound fertilizer for commercial crops, such as tobacco, cotton or hot pepper, which results in high yield and good quality.

烟草，棉花，辣椒等经济作物的专用肥中配入一定比例的硝态氮，可提高其产量，质量，介绍几种经济作物专用肥的原料配比及产品质量。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。