The regular of leaf weight ratio ( LWR ) was unimodal curve, reached a maximum value then decreased gradually, and became steady until later growth stage. 在玉米生长发育过程中叶重比(LWR)呈单峰曲线变化,于拔节期达最大值后逐渐下降,至生育后期变化基本平稳。
Study on Change Regular Pattern of Leaf's Chemical Composition in the Period of Sun Cured Tobacco Modulation 晒红烟调制时期烟叶化学成分的变化规律研究
The main results were as follows : 1. For the 10 varieties, there were no regular relations between chilling requirements of leaf buds and flower buds. 主要结果如下:1.10个中、低需冷量桃品种,在需冷量高低与需热量高低上,花芽与叶芽间没有明显的规律性关系。
Germination hastening were taller and more regular in plant height and faster in leaf growth speed. The yield of germination hastening was higher of 26.1 % than that of no germination hastening. 其中,催芽处理植株高、整齐度好,叶片抽生速度快,比未催芽处理增产26.1%,增产达极显著水平;
At fast develop the planted resources. The leaf of two years planted Rheum of Qinghai Xining and vicinity districts at regular intervals were collected and mineral elements in leaf of Rheum were analysed for the science basis for continue development and use of Rheum resources of Qinghai Xining. 定期采集了青海西宁及邻近地区两年生种植大黄叶,分析测试了其矿物质元素,为西宁大黄资源的可持续开发和利用提供科学依据。