英文: Based on the experiment data of summer maize in Irrigation Experimental Station of North west A&F University during 2001~2004, a normalized model between leaf area
index (LAI) and accumulated temperature was developed.
英文: In some xerophytes, such as cacti, most of the leaves are modified into spines, greatly reducing the leaf area
for transpiration; the photosynthetic function of the leaves is taken over by the green stems.
中文: 在一些旱生植物中，如仙人掌，大部分的叶片都特化为刺，极大的减少了叶片区域的蒸发作用，同时光合作用为绿色的茎所承担。 更详细...
英文: Rice yield reached the maximum at a leaf area
index of seven to nine in indica-japonica cross variety, and at a leaf area
index of about five in japonica variety, respectively.
英文: The Earth\'s albedo varies mainly through varying cloudiness, snow, ice, leaf area
and land cover changes.
中文: 地球的反射率主要因云的变化、冰、雪和土地覆被状况的改变而变化。 更详细...