摘要
本文在分析水稻分蘖期阴害指标的基础上,指出江苏淮南稻区阴害发生的气候规律。同时阐明水稻分蘖期阴害,使稻株体内糖氮比例严重失调,叶绿素a+b和a/b值发生显著的变化,光合作用受到阻碍。因而,导致分蘖数减少,干物重下降,株高增加,生育期延迟,且受害程度随不同阴害处理而异。
The climatic regularity of insufficient illumination in rice area of Huainan in Jiangsu Province was showed, based on analysing indexes of insufficient illumination during the tillering stage of rice. And it was expounded that, because of insufficient illumination during the tillering stage of rice, the ratio of carbonhydrate and nitrogen contens in rice plants was imbalanced, values of a+b and a/b of chlorophyll in rice leaves changed notably, and photosynthesis was hindered. Therefore, it was caused that the number of tillers and dry weight decreased, the height of plant increased, the duration of gowth lengthened, and the degrees of disaster were different with various illumination levels
出处
《中国农业气象》
CSCD
北大核心
1990年第3期12-17,共6页
Chinese Journal of Agrometeorology