Cultivated area ( area under cultivation ) ： refers to farmland which is plowed constantly for growing crops , including cultivated land , newly cultivated land in the current year , farmland left without cultivation for less th an three years and fallow land in the current year , rotation land , rotation land of grass and crops , farmland with some fruit trees , mulberry trees and other trees and cultivated seashore land , lake land , and etc 耕地面积：指年初可以用来种植农作物、经常进行耕锄的田地，除包括熟地、当年新开荒地、连续撂荒未满三年的耕地和当年的休闲地（轮歇地）外，还包括以种植农作物为主并附带种植桑树、茶树、果树和其他林木的土地，以及沿海、沿湖地区已围垦利用的“海涂” 、 “湖田”等面积。
In this thesis , a new strip chopping anti - blocking mechanism and a new no - till planter operating well in heavy straw mulching condition are developed from the following aspects : ( 1 ) in order to solve the problem that the no - till planters can not work well when the mulched straw is long and thick , especially in the double cropping area of huabei plain where the winter wheat gives a high yield , a new strip chopping anti - blocking mechanism was developed . it consists of a group of rotary blades , a narrow tine opener , a shear bar , a hood and a deflector 在以下几个方面进行了较为深入的研究： （ 1 ）在对国内外免耕播种机防堵装置研究的基础上，针对华北一年两熟地区麦收后地表覆盖量大的特点，通过对驱动式和从动式防堵装置的对比实验，设计出一种具有高效防堵能力的带状粉碎防堵装置，该装置由组合刀片、开沟器、定刀片、罩壳和导草扳组成。
Through the summarization and analysis of the knowledge on mechanized conversation tillage , this paper conceptualize and theorize the processes of corn and wheat tillage . a expert system of mechanized conversation tillage , which is applied in the region with a crop one year , is firstly developed in domestic 本课题在总结和分析机械化保护性耕作知识的基础上，将保护性耕作工艺概念化、理论化，在国内首次开发了适用于一年一熟地区全程机械化保护性耕作的网络化的专家系统。
Meter for cultivated land , 45 yuan for uncultivated land serve as the price sold for land controlled by the government . but when the cost of appropriating land exceeds 75 yuan sq . m , or 45 yuan , preference shall be given according the regulations concerning the calculation of the cost of appropriating land 2 、生产型的私营企业和外商投资企业使用市属工业用地，熟地按每平方米75元、生地每平方米45元的标准作为政府控制土地出让价格，但征地成本超过每平方米75元或每平方米45元的，按征地成本价计算的规定予以优惠。
As at the end of september this year , there are about 15 000 flats which are completed but not yet sold . about 48 000 flats are either under construction or have not yet been sold or offered for sale . moreover , the sites already granted to developers for which construction can commence at any time could also provide some 10 000 flats （二）截至今年九月底，已落成而未售出的货尾单位约有一万五千个；正在兴建中而尚未发售或售出的单位，约有四万八千个；已批予发展商而随时可动工的所谓熟地估计可提供约一万个单位。
Urban land purchase & reserve system ( ulprs ) is such a management institution that organizations entrusted by city government , such as land reserve center , collect the lands using by different users through such ways as expropriate , purchase and replacement , then turn them into processed land through land renewal and exploitation , and provide them to market designedly to meet the needs of all kinds of construction demand through ways as bidding and auction according to all the year urban land plan 城市土地收购储备制度是指由城市政府的委托机构，如土地储备中心，通过征用、收购、置换等方式，将土地使用者手中分散的土地集中起来，进行土地整理和开发，在完成一系列前期开发整理工作后，变成可建设的“熟地” ，根据城市土地年度计划，通过招标、拍卖有计划地将土地投入市场，以供应和调控城市各类建设用地需求的一种经营管理制度。
