查询词典 cropping

Significant differences were observed in the kinetic parameters of test enzymes between continuous cropping of gramineous crops and continuous cropping of or rotation with leguminous crop.

土壤质量与土壤的生物学性质密切相关，种植制度对土壤生物学特性的影响研究对土壤质量管理具有重要的意义。

During studying different levels potential yield of main cropping modes, bring forward the conception of "equivalence potential yield", and this conception made potential yield of different crops comparable and transpositional. So we can analyze the main factors influencing mostly different levels potential yield of monoculture and main cropping modes for different regions.

在对种植模式生产潜力的研究过程中提出了等价生产潜力的概念，以解决不同作物间生产力的横向比较与换算问题，同时注意到单一作物与种植模式间的生产潜力影响因素，并量化分析了这些主要的影响。

The result showed that the contents of p hydroxy benzoic acid,vanillic acid(extracted by 1mol·L -1 NaOH) in continuous cropping soil were significant higher than that in normal cropping soil,and the content of vanillin had no significant difference in these soils.

结果表明，重茬土壤中对羟基苯甲酸和香草酸的含量(1mol·L-1NaOH提取)大于正茬土壤，且差异达到极显著水平，香草醛含量差异不显著；重茬大豆根系水提液中对羟基苯甲酸、香草酸、阿魏酸、香草醛、香豆素含量均高于正茬。

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。

The results indicated that applying 105kg/hm2 nitrogen and 75kg/hm2 phosphorus fertilizer is the most economic and rational; applying 45000kg/hm2 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 67500 zhu/hm2, the transplanting style after growing seedlings in small arch greenhouse in early spring and the multiple cropping style after rape stubble should be extended over large areas, the multiple cropping style after wheat stubble should be extended in the southern rivers rigions of this locality.

在陇东旱作条件下，通过对&庆甜1号&进行肥效、密度及分期栽培等试验，正常条件下施N 105kg/hm2、P2O5 75kg/hm2是地膜覆盖种植&庆甜1号&经济合理的氮、磷施用量；45000 kg/hm2农家肥和磷肥一次性基施、氮肥的2/3作种肥，1/3作追肥施用较为经济合理；最佳种植密度为67500株/hm2；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示范推广。

Soil enzyme activities were studied in long continnous cropping Cotton field and activated charcoal through cotton continuous cropping point trial.

试验通过棉花连作定点微区试验研究了棉花长期连作和活性炭处理后棉田土壤酶活性的变化。

There was no significant soil and water loss differences in equivalent peanut land between sole peanut and alley cropping systems. There were also 146-172mm surface runoff and 6503-7571kg ha〓 soil losses annually in alley cropping systems.

就可比花生种植面积而言，花生南酸枣间作方式下水土流失量与传统花生种植方式下没有显著差别，年地表径流和土壤流失量仍然分别高达146～172mm和6503-7571kg ha〓。

Twenty quadrats were selected randomly in the cropping fields of Xishan District of Mudanjiang City and its around areas. The hoarding habit of A. agrarius in the cropping fields in suburbs of Mudanjiang City was studied through hole-digging and measurement method.

方法］在牡丹江西山及周边的庄稼地内随机选择20个样方，采用挖洞测量法研究了牡丹江城市郊区庄稼地的黑线姬鼠的贮食习性。

Therefore, several experiments were carried out to study their effect on the growth of tobacco seedlings and the activities of enzymes in soils. The main objects were to realize the mechanisms and reasons of continues cropping obstacles, to provide scientific information for solving the problems produced by continuous cropping, and to improved the yields and qualities of fire-cured tobacco in tobacco-growing areas of Southwest China.

本项研究以烤烟根系分泌物和根残体为材料，探索它们对幼苗生长和土壤酶活性的影响，旨在研究烤烟连作障碍发生的机理和可能的原因，为进一步解决我国西南主要烟区的连作障碍问题，提高烟叶的质量和产量提供科学依据。

Alley cropping; strip cropping: Growing two or more crops in alternating strips or blocks on the same piece of land at the same time.

条植法；条播法：在同一块田里按条或块同时种植两种或两种以上的作物。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。