查询词典 dry land farming

The Fertile Crescent is a rich food-growing area in a part of the world where most of the land is too dry for farming.

肥沃的新月是食物丰富的地方，而世界上大多数的土地都太干旱，以致不适合务农。

And the traditional plough-rake-harrow farming system for dry land was formed.

魏晋南北朝时期北方农业的进与退为网络搜集整理，原创性较弱。

Nitrogen leaching to the groundwater is one of the major nitrogen loss ways in dry land farming systems,and contributes to a large extent in groundwater pollution.

渗漏流失是旱地农田氮素流失的主要途径之一，也是引起地下水污染的重要原因。

Fully raising rainfall use efficiency of farm-land is the basis of high efficient utilization to limited water in dry-land farming.

充分提高农田降水利用效率是旱地农业中有限水高效利用的基础。

2Nd International Symposium. on Soil Erosion and Dry-land Farming

2-4 Oct。 2006 第二届土壤侵蚀与旱地农业国际学术讨论会

The northern half of China has less than 20 per cent of the nation's water, yet is home to more than 40 per cent of the population, much industry and over 50 per cent of arable land, according to dry-land farming expert Shan Lun, an academician of the Chinese Academy of Engineering.

中国工程院院士、旱地农业生理生态学家山仑说，华北拥有不到全国20％的储水量，却居住着超过全国40％的人口，是国家重要的工业基地，还拥有超过全国50％的可耕地。

Dry-land farming high efficient utilization comprehensive technical approaches

旱地农业；高效利用；技术途径

Based on the analysis of the experimental data obtained of north Ying-shan Mountain Range, the paper puts forth some approaches, with respect totillage, rotational cropping and fertilizers, in the improvement of rainfallwater utilization in dry-land farming.

本文是作者根据近年来在内蒙古乌兰察布盟北部(年降水量约300毫米左右)地区，通过加强田间管理、耕作施肥、种植绿肥压青等措施，有效地提高了对当地农业降水资源的利用率，并探讨了一些新的途径。

The results show, under the long-trem influence of different farming behaviors, the soil, collected from dry-land in low multiple crop index to dry-land in high multiple crop index to composite-land in high multiple crop index, decease in bult density, clay content, total P and activities of catalaes and increase in organic matter, humic acid contents, nitogen, available nitrogen, phosphorus, potassium, soi breathe intensity and urease, phosphatase, protease active content.

选择贵州中部喀斯特山区普定县猫洞小流域地区，通过长期受不同生产行为影响的区域（低复种旱作区、高复种旱作区、高复种复合农作区）的土壤采样分析，结果表明：喀斯特山区小流域土壤在长期不同生产行为影响下，从低复种指数旱作区、高复种指数旱作区到高复种指数复合农作区，土壤容重、粘粒含量减小，而土壤有机质、腐殖酸含量、全氮、碱解氮、速效磷、速效钾、土壤呼吸强度、脲酶、磷酸酶、蛋白酶活性含量依次增大，土壤全钾含量和过氧化氢酶活性却依次减小。

According to a great number of unearthed cultural relics of modem archaeology and ancient books records of Chinese and Yi charater as well as newst study meults of national ancient philology, historical toponomy, agricultural origin of rice cultivation and dry land farming, ceramics, ship - building technological history, preliminary astronomy and calendar, original religion and blood - type genetics,etc, Yan Emperor culture which was an early culture of New Stone Age that originated from flint culture of O...

根据现代考古发掘出土的大量文物和汉文与古彝文古籍记载，以及民族古文字学、历史地名学、稻作和旱作农业起源、制陶和造船工艺史、原始夭文历法、原始宗教、血型遗传学等多学科最新研究成果来看，炎帝文化是炎帝氏族于约1万年前在洞庭湖畔与楚湘丘陵地区的石器时代晚期燧石文化基础上发群起来的新石器早期文化，是中华文明与世界远古文明的原胚，对中华民族的形成、中国农耕文明与世界农耕文明的诞生与发展作出了巨大贡献。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。