查询词典 fertile farmland

The nitrogen and phosphorus migration characteristic and influence factor in Karst area were studied through sample analyze to representative karst nonirrigated farmland and the experiment of pot, in Karst area.

在喀斯特地区，通过对有代表性的喀斯特旱地进行采样分析和盆栽试验，对喀斯特旱地土壤中氮磷的迁移特征及影响因素进行了研究，主要研究结果如下： 1。

With the practice and research on the grade-determination of the cultivated land , the paper, based on the concept and purpose of the grade-determination of the cultivated land , has analysed the problems existing in the course of practice and summarized the reasons about " the rules of the grade-determination of farming land " which the Ministry of Land and Natural Resources had issued , including the issues about dependence between grading index of cultivated land and utilizing index ,or dependence between grading index of cultivated land and natural index , lack of the nationwide comparativity of the achievement on grade-determination of the cultivated land ,the sudden change indexes between the paddy field and its adjoint nonirrigated farmland, the representativeness of appointed crop and so on.

通过耕地分等的实践和研究，文章从耕地分等的内涵和目的出发，对国土资源部颁布的《农用地分等定级规程》在实践过程中所存在的问题及其原因进行了归纳和分析，其中包括耕地等指数与自然等指数、利用等指数的相关性问题，耕地分等成果在全国范围内缺乏可比性问题，相邻地块间水田和旱地的等指数出现突变问题，指定作物的代表性问题以及熟制问题等。

The influences of the transplanting date on the survival rate, the growth duration, the growth vigour and the yield of the mulched maize growing in nonirrigated farmland in Xining area have been studied.

以&酒单 2号&品种为材料，研究了不同移栽时期对西宁地区旱地地膜玉米存活率、生育期、植株长势和产量的影响。

Unless since land it utilize by change watch, the with the fastest developing speed in cities and towns, the forest land , the whole area of herb ground increase very fast under the policy of grain for green, Yuan Tai station nonirrigated farmland increase by a large margin, the land of rivers and creeks is reducing, land use ratio of Jingchuan county remain to raise, the total area of use is reducing too.

从土地利用变化看，城镇的发展速度最快，林地、牧草地总面积在退耕还林还草的政策下增加较快，塬台旱地大幅度增加，河川地在减少，泾川县总的未利用面积在减少，而土地的利用率有待提高。

Maize ; nonirrigated farmland ; plastic film covers ; transplanting date ; late frost ; Xining area

玉米；旱地；地膜覆盖；移栽时期；晚霜；西宁地区

All illegal acts, such as deforestation for farmland reclamation, illegal cutting, illegal requisitioning and occupation of forest land, overcutting, the encroachment on the rights and interests of forest farmers, should be dealt with strictly according to law.

对毁林开垦、乱砍滥伐林木、乱批滥占林地、超限额采伐以及侵犯林农合法权益等一切违法行为，都要严格依法处理。

NO3--N pollution in drinking water at the depth of 20 m is serious with common and serious overproof rates of 39.3% and 7.1% respectively. NO3--N content in irrigation water for farmland and greenhouse at the depth of 40 m is 7.4 mg·L-1 and 9.6 mg·L-1 with respective common overproof rates of 25.0% and 37.5%, and zero serious overproof rate.

设施蔬菜栽培区表层地下水(地下饮用水， 20 m)受硝态氮污染严重，超标率和严重超标率为39.3%和7.1%；而深层地下水(农田和大棚灌溉水， 40 m)硝态氮含量7.4 mg·L-1和9.6 mg·L-1，超标率分别为25.0%和37.5%，无严重超标水样。

NO3(superscript -)-N pollution in drinking water at the depth of 20 m is serious with common and serious overproof rates of 39.3% and 7.1% respectively. NO3(superscritp -)-N content in irrigation water for farmland and greenhouse at the depth of 40 m is 7.4 mgL^(-1) and 9.6 mgL^(-1) with respective common overproof rates of 25.0% and 37.5%, and zero serious overproof rate.

设施蔬菜栽培区表层地下水（地下饮用水，20m）受硝态氮污染严重，超标率和严重超标率为39.3%和7.1%；而深层地下水（农田和大棚灌溉水，40m）硝态氮含量7.4mgL^(-1)和9.6mgL^(-1)，超标率分别为25.0%和37.5%，无严重超标水样。

Has built standard milk stations, cows' herding areas and pastural areas; promoted the mode of "individual farmland plus, raising areas plus, pastural areas plus, modern milk stations"; introduced world first class automatic milking machines and raw milk quality analysis system; changed cow raising mode to a scientific, regulated, collective and modernized one; set a new mode for the Chinese cow raising industry andset a standard for an excellent raw milk base construction.

伊利集团先后为奶源基地累计投入近10亿元，建标准奶站、奶牛小区、牧场园区，大力推进&个体牧场+养殖小区+牧场园区+现代化奶站&的奶牛饲养模式，并引进了国际一流的现代化全自动挤奶机和原奶质量检测分析系统，实现了奶牛饲养业向科学化、规范化、集约化、现代化经营模式转变，为中国乳业的奶牛养殖、优质奶源基地建设开创了全新的模式。

The individual growth,morphology and population biomass of Pennisetum centrasiaticum clones at two different habitats of farmland-sand dune ecotone on Keerqin sandy land of Inner Mongolia were compared in this study.P.centrasiaticum clones had significant morphological plasticity and different biomass distribution pattern at different habitats.

对生长在不同沙地生境下的白草无性系进行了个体生长与形态以及种群生物量等指标的比较研究。结果表明，生长在不同生境下的白草无性系表现出显著的形态可塑性和不同的生物量分配模式。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。