查询词典 crop-eared

The reference crop evapotranspiration(ET0) in Guanzhong region was calculated with the Penman-Monteith equation. The change characteristics of meteorological factors and ET0 over year were analyzed. The regressing relation between ET0 and geography factors was established. Space distribution of ET0 based digital elevation model was obtained. The water consumption model of main cropes was established using the crop cofficient method. The irrigation water requirement of main crop and it's space distribution based DEM under the different precipitation probability was obtained, which advanced the calculation precision of ET0 from spot scal to regional scal. The concept of water consumption under the irrigational scal was proposed. The water consumption model of different water user and model of groundwater balance based on the water consumption of Baojixia irrigation district was established. Which can refects the relation between water utilization, water consumption and change amount of groundwater resouces.

深入分析了关中地区气象要素的变化趋势，用Penman-Montainth 公式计算了参考作物蒸发蒸腾量（ET0），建立了ET0与地理要素的多元回归关系，获得了基于数字高程模型DEM的关中地区ET0的空间分布图；用作物系数法建立了关中主要作物生育期耗水模型，获得了主要作物在不同降雨条件下的灌溉需水，以及基于DEM的主要作物灌溉需水空间分布图，提高了作物蒸发蒸腾量由点到面尺度转换过程中的估算精度；界定了灌区尺度的耗水量的概念，包括用水耗水和非用水耗水，建立了灌区耗水量计算模型及基于耗水量变化的浅层地下水均衡模型，能较好地反映灌区引水量、耗水量及地下水蓄变量之间的内在关系。

For example of the Shiyang River Basin along the Hexi Corrider,in Gansu province,made the imitial research of the major crop water production function and irrigation schedule optimal model,the results are following: 1Based on the related experimental datum gathered,drawing the relationship curve of several major crop yield and evapotranspiration,such as spring wheat,spring wheat-corn strip field,seed melon,sweet melon,cotton and flax and so on. The result shows these there:linearity and non-linear between crop yield and evapotranspiration.

本研究以甘肃省河西走廊石羊河流域为例，对其主要农作物的水分生产函数及灌溉制度优化模型作了初步研究，取得了以下成果： 1 根据收集的有关试验资料，绘制了春小麦、春小麦-玉米带田、籽瓜、白兰瓜、棉花和亚麻等几种主要农作物产量与耗水量的关系曲线，结果表明，产量与耗水量之间一般存在着线性与非线性的关系。

Firstly, the row crop and background were segmented by the excess green value. Secondly, the image strips were divided by crop image horizontally and the position was calculated by detecting the peak on the curve resulting from vertical projection of strips. Finally, the crop rows center lines were accomplished by robust regression.

对作物图像运用过绿特征值分割作物和背景，将得到过绿特征图像划分为若干水平图像条，对图像条过绿特征值进行垂直投影，求取投影曲线上突出峰点的位置；利用稳健回归法对位置点进行线性拟合得到作物的行中心线。

"A typical scheme selects rotation crop s from three classifications: cultivated row crop s (e.g., corn, potatoes), close-growing grains (e.g., oats, wheat), and sod-forming, or rest, crop s (e.g., clover, clover-timothy)."

典型的轮作耕种计画是从行间作物、密植的谷类、草根层作物或休闲作物(如车轴草、车轴草－梯牧草)中选择轮作作物。

The effect of rotation payment on rice production is statistically significant in the first crop, however, the effect of set-aside payment on production in the second crop is larger the first crop by four times.

第一期的稻田决策以稻作或轮作为主，故对轮作给付有显著反应，而在第二期的稻田决策则以稻作或休耕为主，且休耕行为具有习惯倾向，其对休耕给付的反应程度要较第一期大上四倍。

In practice, developments of crop technology include the same sort of practices adopted elsewhere in the world, namely: to utilize soil and plant testing services to predict N and P requirements, the need for soil amendments to improve soil structure, pH and salinity levels, infestation levels of take-all, the need for additional N after crop emergence, and so on; monitoring the crop's development after emergence, which is practised amongst the more advanced growers; and computer assisted services are used to help with these practices.

事实上世界上任何地方发展作物生产技术都包含相同的内容，即：利用土壤和植株测试服务预报氮磷需求，土壤结构改良的要求、pH及盐渍化程度、全蚀病的感染程度、作物出苗后追施氮肥的需要，等等；监控作物出苗后的发育情况已为更多的先进农民所采用；计算机辅助服务也用来帮助这些生产措施。

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。

One, the United States promulgated American crop insurance and the brief history that calamity helps 1938 " law of confederative crop insurance ", insurance company of American confederative crop produces according to this law.

一、美国农作物保险与灾难援助的简要历史 1938年美国颁布了《联邦作物保险法》，美国联邦作物保险公司便是根据这个法律产生的。

The development of PC desiderates exact information gained by RS rapidly (Moran et al., 1997), hyperspectral technology which acts as the hot and frontier of RS in the world, is showing outstanding potential in agriculture because of its ability not only to monitor crop and some of its surroundings timely, nondestructively in a big area as the normal RS technology does, but also improve the classification precision and accuracy of agriculture resources and supervise and analyses crop growth and the factors related with crop yield by spectral precision predominance.

精确农业的发展迫切要求遥感技术提供快速、准确的地表信息（Moran等，1997），高光谱遥感技术作为国际遥感科学领域的研究前沿和热点，由于其既具备常规遥感对农作物及其生长环境监测的大面积、适时、非破坏性等优点，同时又能够通过其精细光谱优势提高农业的分类的精度和准确性，动态地监测和分析作物的健康状况与影响作物产量的环境因素，因此其在农业领域已表现出非凡的研究潜力。

"The loss of earnings for this crop year may be in the region US$10 million, for the producers and coffee dealers, and will cost the CIB some J$30 million to J$50 million, relative to the original crop projections of a typical crop year," said Gentles.

相对于通常一个普通咖啡年度的产量预计来说，本年度咖啡农及咖啡商的收益损失将会在1千万美元左右，咖啡工业委员会也会因此损失3千～5千万牙币（1美元=89牙币左右）。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。