By using the technology of combine with the laser controlled land leveling the baby seedling direct sowing , it saved water 611 . 854 m3 / hm2 , the saving rate was 25 . 888 % , so it thought that using the laser controlled land leveling was the base of paper covering and baby seedling direct sowing technology 在激光平地的条件下，再采用乳芽直播还可节约泡田用水611 . 9m ~ 3 / hm ~ 2 ，节水率为25 . 9 ，并且认为激光平地是纸膜覆盖、乳芽直播水稻种植新技术的基础。
It includes the investment by the real estate development companies , commercial buildings construction companies and other real estate development units of ownership in the construction of house buildings , such as residential buildings , factory buildings , warehouses , hotels , guesthouses , holiday villages , office buildings , and the complementary service facilities and land development projects , such as roads , water supply , water drainage , power supply , heating , telecommunications , land leveling and other projects of infrastructure 指房地产开发公司、商品房建设公司及其他房地产开发法人单位和附属于其他法人单位实际从事房地产开发或经营的活动单位统一开发的包括统代建、拆迁还建的住宅、厂房、仓库、饭店、宾馆、度假村、写字楼、办公楼等房屋建筑物和配套的服务设施，土地开发工程（如道路、给水、排水、供电、供热、通讯、平整场地等基础设施工程）的投资。
On the basis of those , choosing the classification element and using the methods of income reduction and cost approach , this paper has calculated the land price . from the theory and means , the paper has made a research inquiring into the land price about the area between city and countryside and analyzed regularity of the land level and the feature of the land price 并在此基础上，选择适合城乡结合部土地特征的定级因素，运用收益还原法和成本逼近法测算土地价格，从理论和方法上对城乡结合部的地价进行了一些探讨性的研究，并对土地级别分布规律和土地价格特点进行了分析。
Investment in real estate development : ： it includes the investment by the real estate development companies , commercial buildings construction companies and other real estate development units of various types of ownership in the construction of house buildings , such as residential buildings , factory buildings , warehouses , hotels , guesthouses , holiday villages , office buildings , and the complementary service facilities and land development projects , such as roads , watersupply , water drainage , power supply , heating , telecommunications , land levelling and other projects of infrastructure 房地产开发投资：包括各种经济类型的房地产开发公司、商品房建设公司及其他房地产开发单位统一开发的包括统代建、拆迁还建的住宅、厂房、仓库、饭店、宾馆、度假村、写字楼、办公楼等房屋建筑物和配套的服务设施、土地开发工程，如道路、给水、排水、供电、供热、通讯、平整场地等基础设施工程的投资。
Baby seeding direct sowing with re - paper covering were introduced in this paper in this study , many experiments were done include leveling the land of 20 hm2 paddy field experiment by using laser controlled land leveling machine in jing ertun village of liaoyang city , testing and summarizing the rules of breeding the baby rice used to sowing , investigating the growing of rice during its whole growth duration , testing and analyzing the performance both a kind of baby rice seedling direct planting machine and the baby rice seedling - throwing machine 本文还介绍了水稻纸膜覆盖直播种植技术的种植方法。本文通过在辽阳市太子河区景尔屯村的20hm ~ 2水田应用激光设备进行平地作业，对乳芽培育的工艺规范进行了试验和总结，跟踪调查了水稻全生育期的生长状况，分别对一种水稻乳芽直播种植机械和乳芽抛播机械进行了性能检测与分析。
