摘要
为了进一步了解瓜尔豆对弱光的敏感时期,在瓜尔豆生长的不同生育期进行了弱光处理(30%自然光),结果表明:各个生育期弱光都会导致瓜尔豆的株高增加,茎粗降低,叶面积减小,叶及植株干物质重减少。弱光显著降低瓜尔豆产量,其中开花结荚期弱光对产量影响最大,导致减产高达67.1%。鼓粒期弱光,主要影响了种子的充实度,使种子千粒重明显降低,产量下降45.2%。幼苗期弱光对植株形态影响较大,使产量减少28.1%,因此在生产过程中应根据光照条件不同,尽量使中后期处于较好的光照条件下,通过加强管理获得高产。
This study aims at determining which stage of guar bean（ Cyamopsis tetragonoloba L. ）development is influenced the most by manipulating light dosage, aiming at a well balanced growth and high yield. During the field experiments on Cyamopsis tetragonoloba different stages of growth （seedling period, blooming and pod formation period, seeding period） were manipulated by decreasing light intensity by means of shading. The results show that regardless to any stage, weak light conditions can lead to an increase in elongation growth and a decrease in stem diameter, leaf area and the weight of leaf and plant dry matter. It also visibly influences the yield, especially during blooming and pod formation, reducing the yield by up to 67.1%. During seeding period shading has a major influence on the richness of seeds, leads to the remarkable decrease of kernel weight and 45.2% decrease of the yield. Providing weak light conditions during the seedling period mainly influences the plant shape, causing a 28.1% decrease in yield. So during the plant growth, a good yield was got by the different light condition at the upper period, and strengthening the management.
出处
《石河子大学学报（自然科学版）》
CAS
2008年第4期453-455,共3页
Journal of Shihezi University(Natural Science)
关键词
弱光
生育期
生长发育
产量构成
shading
growing period growth and development
yield formation
