查询词典 multiple cropping

The mount of germ and fungus quantity in soil are remarkably increased for the continuous cropping about 5 years, puts the trichobacteria quantity always change tendency to reduce;The edaphon total quantity, the bacterium quantity change reduces generally above the continuous cropping 5 years and below 5 years (including 5 years) the change are not obvious;In the nitrogen physiology group by ammoniates the bacterium primarily and the quantity changes are not very big;The nitrifying bacteria quantity is lower than the comparison (non- continuous cropping), the quantity of denitrifying bacteria is opposite;The alkalinity phosphatase, the urease, invertin activeness have a closed relations with the continuous cropping when it will increase less than 5 years or decrease in more than 5 years. The relation between catalase activeness and the continuous cropping is not very big. The reduction of the invertin activeness, the alkalinity phosphatase, urease activeness have slightly elevates, catalase activeness have no the regular changes.

表现为连作条件下土壤真菌数量显著增大，放线菌数量总的变化趋势降低；土壤微生物总量、细菌数量变化在连作5年以上普遍降低，5年以下(包括5年)则变化差异不明显；氮素生理群中以氨化细菌为主，但数量变化不大；硝化细菌数量低于对照组，反硝化细菌数量则相反：多酚氧化酶、转化酶活性在5年之前逐渐上升，5年之后逐渐下降，，脲酶活性随着连作年限增加持续上升，过氧化氢酶活性、碱性磷酸酶活性变化无规律。

The detected phenolic, gallic acid was gradually increased with continuous cropping years increasing, vanillic was steady in soil of different continupus cropping years, ferulic acids had more content in soil of five-year continuous cotton cropping, but remarkably reduced with ten-year continuous cropping.7 It was found that the p-hydrobenzoic, vanillic, gallic acid and ferulic acids in different comentration inhibited/stimulated the spore germination and mycelium growth of cotton verticillium wilt.

没食子酸含量随着连作年限增加在土壤中逐渐增加，香草醛在不同连作年限土壤中含量较稳定，而阿魏酸连作5年土壤中含量最高，连作10年时显著下降。7不同浓度的对-羟基苯甲酸、阿魏酸、香草醛和没食子酸对棉花黄萎病病菌孢子萌发和菌丝生长产生促进或抑制的化感作用。

With the increase of continuous cropping year, ammonifying bacteria, azotobacter and cellulolytic bacteria showed the tread of first increases and then decreases and reached the biggest value at continuous cropping for 5 and 3 yr, while the nitrifying bacteria quantity was decreased sharply with the increase of continuous cropping year.

随连作年限的增加，氨化细菌、固氮菌和纤维素分解菌数量呈现先增加后降低的趋势，分别在连作5、3和3年达到最大值，而硝化细菌数量随连作年限的增加急剧下降。

For such reasons, the author investigated comprehensively on cropping systems and agriculture development in Fenxin County from 2002 to 2004, using mathematics model and GIS, discussed the cropping systems characteristic and development orientation and optimized the cropping systems spatial distribution. The data were collected from literature, questionnaires to experts and farm households, on-site investigation and field experiments. The main results are as follows:1,Because of inconsequent exploitation and management of the resources, rapid increasing population in hilly region of red soil, the stress on soil, deterioration of farmland ecological environment and soil gleization become more and more serious. Natural features , water and thermal resources and species are abundance.

基于以上目的，作者于2002-2004年，通过资料调研、专家咨询、农户调查、实地考察和田间试验等手段，对江西奉新县的种植制度和农业发展进行了全面的调查，通过建立数学模型和运用地理信息系统，对奉新县的种植制度的特征和发展方向进行了全面的论述，并且对种植制度进行了空间布局优化，主要结果如下： 1、红壤丘陵区由于长期以来对资源的不合理利用和掠夺式经营以及人口的急剧增长，土地压力上升，农田生态环境恶化，土壤潜育化，土壤肥力退化非常严重，但区内自然条件优越、水热资源总量丰富、物种丰富，具有一定的区位优势，为区内种植制度调整提供了有利条件。

In order to evaluate the restoration effect of cropping systems on continuous cropping soil, treatments of nitrogen-catching crop, rotation, and intercrop were adapted to study soil fertility and microbial indexes of the soil from an 8-year continuous cropping field using pot experiments. Fallow was used as a control. Cucumber yield were recorded.

为了评价栽培制度对连作障碍土壤的修复效果，采用盆栽方式，设置休闲、轮作、间作等处理，以生产中常用的栽培制度即夏季休闲的连作制度为对照，研究各处理对连作8年黄瓜的温室土壤生物修复效果及对后茬黄瓜产量的影响。

There will be an obvious important effect of global climatic change in future on cropping systems in China The heat resource will be increased to a certain extent in all regions of China, and the north borderline of two crops per annual or three crops per annual will move northwardly, the cropping range, output and quality of crops will be changed However, there will be a uncertainty of changes of cropping systems due to the adverse impact of moisture changes of climate in the future

未来全球性气候变暖对我国的种植制度将产生明显的影响，预计我国各地的热量资源将有不同程度的增加，使一年二熟、一年三熟的种植北界有所北移，主要农作物的种植范围、产量、质量都会有所变化。但由于水分变化可能产生的不利影响，使种植制度的变化具有较大的不确定性。

In single and double cropping region, along with dominating crops such as wheat belt, maize belt and soy bean belt and sustainable increasing of consumption demand it is important and feasibility that carried out crop rotation and continuous cropping, moreover, crop rotation decreasing and continues cropping with longer years.

在一熟和二熟耕作区，随着主栽作物如小麦、玉米、大豆等作物带的形成，加之消费需求的不断增长，使得连轮作成为客观需要，同时由于新技术的应用减少了连作病害使连作具有现实可行性，连作面积增加，年限加长，轮作进一步减少。

The results revealed that with the increasing ear of continuous C. sativus cropping soil vanillic acid, p-hydroxyhenzoic acid and ferulic acid accumulated gradually. The total amount of the three phenolic compounds reached 29. 8 mgkg^(-1) dry soil after 7 years cropping, being markedly higher than that after 1 or 3 years cropping. After treated with these compounds, the root length and stem width of C.

结果表明：土壤中香草酸、对羟基苯甲酸及阿魏酸随黄瓜连作年限增加而呈现积累趋势；在连作7年的大棚土壤中3种酚酸类物质总量达29.8mgkg^(-1)干土，显著高于连作1年和1年土壤中的含量；酚酸物质可使黄瓜幼苗根长及茎粗显著降低，使株高及干物质量略有下降。

In provinces owning cultivated land of higher productivity and higher potential of multiple cropping, the cultivated land is reducing and the rate of multiple cropping is falling.

在耕地粮食生产能力和复种指数潜力较高的一些省区，同时存在耕地的损耗和复种指数的下降，在农产品需求多样化的趋势下，粮食占播种面积的比率也在下降，即使粮食播种面积单产提高也不能从总体上替代实际损耗的耕地。

The results indicated that applying 105kg/hm^2 nitrogen and 75kg/hm^2 phosphorus fertilizer is the most economic and rational method; applying 45000kg/hm^2 farm manure with phosphorus as base fertilizer, two thirds nitrogen as seed manure and one third nitrogen as topdressing is more economic and rational; the best planting density is 67500plant/hm^2; the transplanting style after growing seedlings in small arch greenhouse in early spring and the multiple cropping style after rape harvesting should be extended over large areas; the multiple cropping style after wheat harvesting should be extended in the southern rivers rigions of this locality.

对&庆甜1号&进行了肥效、密度及分期栽培试验，结果表明，正常条件下地膜覆盖种植&庆甜1号&经济合理的氮、磷施用量为N 105kg/hm^2、P2O5 75kg/hm^2；45000kg/hm^2农家肥和磷肥一次性基施，氮肥的2/3作种肥，1/3作追肥施用方式较为经济合理；最佳种植密度为67500株／hm^2；早春小拱棚育苗移栽和油菜茬复种两种种植模式宜在当地大面积推广，麦茬复种适宜在当地南部川道地区推广。

For the head-teacher of the class said that I had seriously broken the school rules,which led me to a three-day suspend class.

为什么呢？因为我的班主任说我严重的违反了校规，于是让我停课三天。

Many of them believe that the conversion of thousands of working-class folk in England spared that nation from the mass carnage and the tyranny that came with the revolution in France.

他们之中有许多人相信，在英国数以千计的劳工阶级之悔改信主使英国免於遭受如法国大革命所造成的大屠杀和专制暴政。