摘要
本试验通过遮光处理,使光照度、温度(最高、最低、日较差、地温)、湿度发生变化,干物质、粒重、茎、叶也相应发生了变化,从而进行了光温条件对干物质积累的效应分析.其结果:干物质的积累随光照度的增加而增加,呈直线正相关;提高温度可提高光合作用强度,超过21℃时光合作用明显下降;日较差的大小与干物质积累无必然性的联系;地温与地上部干物质、粒重的积累呈极显著正相关;湿度增大,粒重下降,呈直线负相关.
Through covering sun-light made the light intensity, temperature (the highest, the lowest temperature, diurnal range and ground temperature), and humidity changing, dry-matter, grain weight, stem and leaf were also changed. Therefor, this paper analysed the effects of sun-light and temperature on accumulation of dry-matter. The results are as follows: With increasing of intensity of sun-light the accumulation of dry-matter increased, the relations between them are linearlly positive; The increase of temperature could make the photosynthetic intensity increasing. When the temperature was above 21℃, the photosynthetic intensity sharply decreased; the size of diurnal range was no certain relation with accumulation of dry-matter; The relations among ground temperature and dry- matter above ground, accumulation of grain weight were obviously positive. The more the humidity increased, the more the grain weight decreased, the relations between them were linearlly negative.
出处
《中国农业气象》
CSCD
北大核心
1992年第4期1-7,共7页
Chinese Journal of Agrometeorology
关键词
小麦
光温条件
物质积累
粒重
Winter wheat Condition of sun-light and temperature Accumulation of dry-matter Grain weight
