...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>日本作物學會紀事 >Studies on the Microclimate in the Vegetations of Tame Pastures in Summer : I. On the effect of irrigation, pasture mixture and clipping on the soil temperature In pastures : II. On the daily variations of air temperature and relative humidity in the vegetations and on the evapo-transpiration of orchardgrass and ladino clover
【24h】

Studies on the Microclimate in the Vegetations of Tame Pastures in Summer : I. On the effect of irrigation, pasture mixture and clipping on the soil temperature In pastures : II. On the daily variations of air temperature and relative humidity in the vegetations and on the evapo-transpiration of orchardgrass and ladino clover

机译：夏季驯服驯服牧区植被的微节化研究：I。灌溉，牧草混合物和削减对牧场土壤温度的影响：II。关于植被中空气温度和相对湿度的日常变化以及果园和Ladino三叶草的蒸发蒸腾

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The daily variations of air temperature, soil temperature and relative humidity in the vegetations of tame pastures and evapo-transpiration of some pasture crops were measured from the stand point to diminish the summer depression. At the same time, the effects of irrigation, pasture mixture and clipping on the soil temperature were investigated.: The results are summarized as follows: 1. Soil temperature; (1) Irrigation: Maximum soil temperature at surface, 5 cm and 15 cm depth was lowered by 3°C, 2°C and 1°C respectively by irrigation when the soil was dry and air temperature was high. (2) Pasture mixture: Maximum soil temperature at 5 cm depth in ladino clover stand was 1°C higher than that in both orchardgrass and orchardgrass-ladino clover mixture. That in orchardgrass-ladino clover mixture was 2°C higher than that in both orchardgrass-ladino clover-Italian ryegrass mixture and orchardgrass-ladino clover-alfalfa mixture. These tendencies were distinct in clear day when the soil was drier or the air temperature was higher. Therefore it is supposed that the maximum soil temperature was affected by the soil moisture content. (3) Clipping: The maximum soil temperature at 5 cm depth in clipping plot of ladino clover was about 3°C higher than that in non clipping plot, while the maximum air temperature in the former was 3°C lower than that in the latter. It is considered from these results that the soil temperature can be controlled by irrigation, pasture mixture and clipping. 2. Daily variation of temperature; The remarkable vertical distribution of air temperature was shown in the vegetation. Especially, the air temperature at 2 cm height reached 35∼37°C in daytime, which was 3.5∼7.0°C higher than that of standard air temperature and was maintained 2°C higher during night. The growing points of these pasture crops might be placed under such condition as some degrees higher than standard air temperature. 3. Relative humidity and the moisture contents of soil and plant leaves; Relative humidity became lower in the daytime than in the morning and evening. Moisture contents of soil and plant leaves showed the same tendencies. 4. Evapo-transpiration; Evapo-transpiration per unit leaf area of ladino clover was more than that of orchard grass. Evapo-transpiration increased exponentially with rise of temperature.
机译：在驯服牧场植被中的空气温度，土壤温度和相对湿度的日常变化，从立式点测量夏季抑郁症的立场。同时，研究了灌溉，牧场混合物和剪裁对土壤温度的影响：结果总结如下：1。土壤温度; （1）灌溉：当土壤干燥时，分别在3℃，2°C和1℃下降低5cm和15cm深度的最大土壤温度，当土壤干燥时，空气温度高。 （2）牧场混合物：Ladino Clover Stack中5厘米深度的最大土壤温度高于果园和果园的兰花 - Ladino三叶草混合物的1°C。在果园径 - 梯子三叶草混合物中高于果园普罗拉斯 - 梯子三叶草 - 意大利黑麦混合物和果园 - Ladino三叶草 - 苜蓿混合物的2°C。在晴天干燥或空气温度较高时，这些趋势在晴天中是明确的。因此，假设最大土壤温度受土壤水分含量的影响。 （3）削减：Ladino Clover剪切图中5厘米深度的最大土壤温度高于非剪切图中的3°C，而前者的最大空气温度比后者的最大空气温度低3°C 。从这些结果中考虑了土壤温度可以通过灌溉，牧场混合物和剪裁来控制。 2.温度的日常变化;在植被中显示出气温的显着垂直分布。特别是，白天2厘米高度的空气温度达到35〜37°C，比标准气温高3.5〜7.0°C，在夜间保持2°C。这些牧场作物的生长点可能被放置在比标准空气温度高一度的条件下。 3.土壤和植物叶的相对湿度和水分含量;白天相对湿度比早上和晚上更低。土壤和植物叶片的水分含量显示出相同的趋势。 4.蒸发蒸腾; Ladino Clover每单位叶面积的蒸发蒸腾量超过了果园草。蒸发蒸腾随温度升高的指数增加。

著录项

相似文献

  • 外文文献
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号