查询词典 cropping

The proper proportion of tripple cropping systemin southern Jiangsu could be:10-156% in the east,about 20% in themiddle and 25-30% in the west region.

新型集约高产高效三熟制在苏南地区发展的适宜比例为：东部地区10%左右、中部地区15-20%，西部丘陵地区20~30%。

Soil organic matter and total N were significantly decreased both in sole peanut and alley cropping system 2 years after Udic Ferroso cultivated.

红壤开垦2年后，无论是花生单作，还是花生南酸枣间作土壤有机质和全氮含量均有一定程度的下降。

Soil moisture increased with soil depth in Udic ferrosol profile, providing possibility of synergistic utilization of soil water in agro-forest cropping system.

红壤水分含量随土壤深度而增加为农林间作的水分协同利用提供了可能。但土壤水分动态结果表明农林间作不会改善表层土壤水分状况。

CHOEROSPONDIAS AXILLARIS AND PEANUT ALLEY CROPPING SYSTEMS ON UDIC FERROSOL IN SUBTROPICAL CHINA III.

低丘红壤花生南酸枣间作系统研究Ⅲ。

In this thesis , firstly, TM remote sensing images were geometry rectified , image intensification, mosaic and cropping by using remote sensing image software ENVI, selected computer-aided supervised classification means to cany distribution using TM remote sensing images of qitai County ,and incorporated soil category material to achieve underlaying surface parameter and vegetation cover degree information in the region of interest .

本文运用遥感图像处理软件ENVI对所选的TM遥感图像进行了几何纠正、图像增强、镶嵌和裁剪，选择计算机辅助监督分类方法，对奇台县TM遥感图像进行了解译分类，并结合研究区土壤类型资料得到了研究区下垫面参数和植被盖度信息。

Planted forests can deplete deep soil water, forming an obstacle to sustainable land use in the semi-arid area of Loess Plateau. The purpose of this study was to examine effects of grazing and cropping on replenishment of deep soil water where forest plantations had depleted soil moisture at depths of 2～9.9 m. We compared soil moisture on plantation plots with that on plots where plantations were replaced by crops, grazed grassland, and ungrazed grassland seperately.

为了研究黄土丘陵半干旱区人工林迹地土壤水分恢复情况，该文以正在生长的人工林土壤水分含量为人工林迹地土壤水分恢复的起点，并分别以持续农地和持续放牧荒坡的土壤含水量为林后农地和草地土壤水分恢复的上限，对位于黄土丘陵半干旱区绥德县境内的人工林迹地土壤水分恢复情况进行了研究。

On the basis of long-term experiment, changes in soil organic C, N and dynamics of soil NO〓-N of cropping systems were investigated in gully area of the Loess Plateau by means of analysis of the 15-year soil samples, crop yield in following crop systems: 1 continuous winter wheat with unmanured , nitrogen, organic manure , phosphorus and organic manure , nitrogen and phosphorus , nitrogen, phosphorus and organic manure , 2 continuous alfalfa, 3 pea-winter wheat rotation, winter wheat-sainfoin rotation, and 4 bare fallow. A model was developed according to the organic C dynamics, and was tested by the long-term experiment.

本文以中国科学院长武试验站的长期试验（始于1985年）为依托，通过对典型处理8-15年的土壤养分、作物产量以及同期降水量等的系统分析，揭示了黄土旱塬区不同种植体系中土壤有机碳、氮的演变规律；阐明了长期施肥条件下土壤硝态氮的迁移积累机理；提出了目前水肥条件下黄土旱塬区冬小麦生产潜力及其提高途径。

Four phenolic components of p-hydrobenzoic, vanillic, gallic acid and ferulic acids could be detected in soil with different continuous cropping years.

其中棉花秸秆中的酚类化感物质含量高于根系分泌物中的，棉花秸秆地上部酚类化感物质含量高于地下部。

To clarify the relationships between phenolic compounds and continuous cropping obstacle of Rehmannia glutinosa, the accumulation amounts of ferulic acid, vanillic acid, vanillin, and β-hydroxybenzoic acid in continuously cropped R. glutinosa soil were measured, and the effects of these four phenolic acids on R. glutinosa growth were studied with water culture.

为了探究酚酸物质与地黄连作障碍之间的关系，检测了重茬地黄土壤中阿魏酸、香草酸、香草醛和对羟基苯甲酸等4种酚酸物质的积累量，并通过水培条件下添加酚酸，研究了4种酚酸对地黄生长的影响。

About the name "spring", there must have been such a story:Before Book of Songs and Book of History, even before word formation, a lamb suddenly felt juicy when cropping grasses; a kid suddenly felt kite's soaring when flying it; a leg, pained from wind stroking all days long, suddenly felt stretched; thousands of snow-white hands suddenly felt spirituality of water when washing by brook, pond and river... All of them started running to tell each other surprisingly, when they decided to name the season by putting their mouths into a shape as if they were whistling and with a pleasant whispery voice, as "Spring".

关于春天的名字，必然曾经有这样的一段故事：在《诗经》之前，在《尚书》之前，在仓颉造字之前，一只小羊在啮草时猛然感到的多汁，一个小孩在放风筝时猛然感到的飞腾，一只患风痛的腿在猛然间感到的舒活，千千万万双素手，在溪畔，在塘畔，在江畔浣纱的手所猛然感到的水的血脉……当他们惊讶地奔走互告的时候，他们决定将嘴噘成吹口哨的形状，用一种愉快的耳语的声量来为这季节命名：&春&。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"