论文部分内容阅读
玉米叶面积损失对其生长发育有影响,2001～2002年分别在温室和田间进行了试验。结果表明:①在温室试验中,去叶处理在播种20d以后进行,每隔14d打去2～3片叶,会影响株高、抽雄期、吐丝期、根和地上部分的产量,不影响茎粗及根与地上部分之比。②在田间试验中,在50%的植株抽丝后7d做了6种去叶处理,打去植株所有的叶对果穗干重、子粒中干物质积累、千粒重和产量影响最大;打去果穗以上所有的叶片与打去果穗以下所有叶片对果穗和子粒干物质积累无明显差异;打去果穗以上半数的叶片与对照基本无差异。
Corn leaf area loss has an impact on its growth and development, 2001-2002 were tested in greenhouse and field. The results showed as follows: ① In the greenhouse experiment, leaf removal treatment was carried out 20 days after sowing, and 2 to 3 leaves were removed every 14 days, which affected plant height, tasseling stage, silking stage, root and shoot yield without affecting Stems and roots and the ratio of aerial parts. ② In the field experiment, 6 kinds of defoliation treatments were done on the 7th day after the 50% of the plants were spun and all the leaves of the plant were harmed to affect the dry weight of the ear, the accumulation of dry matter in the grains, the grain weight per thousand and the yield; There was no significant difference in dry matter accumulation between ear and grain for all the leaves and all leaves below the ear; no significant difference was found between the above half of the leaves and the control.