保护性

Soil and water conservation protective cultivation is an advanced cultivation technology that avoid cultivation or few cultivation on farmland and with stubble cover.Protective cultivation technology is an integration technology that use stubble cover,no-tillage cultivation,deep-plough with machine,and weeding with chemistry.Adopting soil and water conservation protective cultivation can reduce the loss of soil and water in northeast blackland area and improve the soil anti-erodibility.

中文摘要：水土保持保护性耕作是对农田实行免耕少耕，并用农作物秸秆残茬覆盖地表的一项先进耕作技术，保护性耕作技术是由秸秆覆盖、免耕播种、机械深松和化学除草等核心技术组成的一项集成技术，采用水土保持保护性耕作措施可以有效减少东北黑土区的水土流失，提高黑土区土壤抗蚀性。

Furthermore, due to the historical site and its architecture is fresh and active subject in the city, an innovation and development is crucial as well. In this study, four consistent concepts to approach valuable suggestions for the conservation and development of certain historical site and its architecture will be discussed based on conservation and proper renewal, which are the boun...

本文以建立系统科学的历史风貌街区和建筑的保护更新机制为基点，从保护与更新的界定、保护性开发机制的系统性、管理体系的规范性和保护机制的持续性等四个方面，对天津的历史风貌街区和建筑的保护性开发提出建议，以期使宝贵的历史建筑文化资源在得到有效保护的同时进行科学合理的开发利用，并在实施城市的和谐和可持续发展战略中发挥重要的作用。

Investigate the present condition of mechanize protection farming technique expansion, analyses the experience and existent problems of the work, puts forward the counterplan to develop it .

通过对柳林县机械化保护性耕作技术现状的调查，研究分析了工作的经验和存在的问题，有针对性地提出了发展保护性耕作技术的对策。

Consequently, it is necessary to investigate and analyze the situation of protective cultivation in Jiangxi, and carry on scientific experimental demonstration, screen out the protective cultivation, which adapt to local conditions of Jiangxi, than extend and apply it.

所以有必要对全省保护性耕作的现状进行调查、分析，并进行科学的试验示范，筛选出适合本地应用和发展的保护性耕作技术，因地制宜的逐步推广应用。

Objective To screen the protective antigen of G.intestinalis and set the foundation for immune reseach of vaccine. Methods The trophozoite antigens were obtained with in vitro culture system of Giardia lamblia Stile. After further separation, purification and activity verification, the antigens were used to immunize the BALB/C mice divided into different groups,then indexes associated with immunity were determined. Through challenge infection, the most protective antigenic component of G.intestinalis were selected based on its anti-infection ability.

目的 筛选蓝氏贾第鞭毛虫的保护性抗原，免疫疫苗的研制奠定基础方法利用已建立的蓝氏贾第鞭毛虫滋养体体外培养系统，获取滋养体抗原，并进步分离、纯化、活性鉴定；然后分组免疫小鼠，检测相关免疫指标；再行攻击感染试验，视其抗感染能力，筛选出保护性强的抗原组分。

The effect of different conservation tillage methods on the soil chemical property The soil organic matter was shown as that the contents of soil organic matter under conservational tillage methods were higher than conventional tillage, and the promotion under NTS was best in the depth of 0-5cm.

2不同保护性耕作措施对土壤化学性质的影响土壤有机质：保护性耕作措施有利于土壤中有机质的积累，其中NTS处理在表层(0-5cm)的改善效果最明显。

The stage integral model of evaporation amount has been inchoately set up for forecasting field evaporation amount and guiding irrigation, therefore, the system of conservation tillage can be for then developed and perfected.

初步建立了棵间蒸发量的阶段积分模型，为预测农田蒸发量，指导保护性耕作下的田间灌水管理提供理论依据，从而完善和发展了机械化保护性耕作体系，具有创新性。

We found that both SL7207 and SL7207/pEGFP-N1 vaccines can not induce theprotective immunity,while SL7207/pGFP-FL vaccines can trigger antitumorresponses in partial (2/10) of orally immunized mice.And these two tumor-free micealso got the immunity to rechallenge the 10-fold dose of H1 tumor cells when given40 days post the primary challenge.

我们发现，野生型的SL7207和SL7207/pEGFP-N1均不能诱发小鼠的保护性免疫，而SL7207/pGFP-FL则可以在部分小鼠（2/10）中诱发保护性免疫，使小鼠免生肿瘤，并能抵抗在初次荷瘤攻击后40天，10倍于首次剂量的H1肿瘤细胞的再攻击。

The systematic experiment of conservation tillage in two crops a year region has been designed and performed according to the maximum benefit of resources, environment and production, based on the research achievements of conservation tillage technology in one crop a year regions. Series experiments and embedded theory study have been conducted for estimating the feasibility of water saving in conservation tillage and guiding irrigation. At the same time, the evaporations of soil water under the condition of conservation tillages are measured and its mathematic model is studied and significant research achievements have been obtained.

中文文摘：为研究一年两熟地区实行全程保护性耕作技术体系的可行性，选择出适宜该地区一年两熟的保护性耕作技术体系和提供指导灌溉用水的理论依据，论文在一年一熟地区保护性耕作体系研究成果的基础上，以一年两熟地区全程保护性耕作体系的资源环境效益和生产效益为依据，进行了深入的理论分析和田间试验研究；同时进行了保护性耕作条件下，土壤水分棵间蒸发的专项试验及模型研究，取得了重要的研究进展。

The systematic experiment of conservation tillage in two crops a year region has been designed and performed according to the maximum benefit of resources, environment and production, based on the research achievements of conservation tillage technology in one crop a year regions. Series experiments and embedded theory study have been conducted for estimating the feasibility of water saving in conservation tillage and guiding irrigation. At the same time, the evaporations of soil water under the condition of conservation tillages are measured and its mathematic model is studied and significant research achievements have been obtained.

为研究一年两熟地区实行全程保护性耕作技术体系的可行性，选择出适宜该地区一年两熟的保护性耕作技术体系和提供指导灌溉用水的理论依据，论文在一年一熟地区保护性耕作体系研究成果的基础上，以一年两熟地区全程保护性耕作体系的资源环境效益和生产效益为依据，进行了深入的理论分析和田间试验研究；同时进行了保护性耕作条件下，土壤水分棵间蒸发的专项试验及模型研究，取得了重要的研究进展。

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。