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引言很久以前?(1890)认为同化物从叶流出的特征决定于整个植株对营养物质的要求强度;Münch(1930)也认为生长的器官(包括营养器官和生殖器官)是营养物质的引力中心,植物进入开花受精时期,形成了一个新的器官生长的活动中心,Masksll和Mason(1930)在棉花的研究中指出,授粉受精的胚珠,干重增加远比末授粉受精者高,证明植物开花受精后,加速了营养物质向胚珠的运输.在禾谷类值物中,引起空疵粒的主要原因是由于未受精或受精后有机养料供应不足的缘故.近年来,殷宏章及沈巩林等研
INTRODUCTION Long ago (1890) characterized the efflux of assimilates from leaves, which depended on the intensity of nutrients required by the whole plant. Münch (1930) also considered growing organs (vegetative organs and reproductive organs) as centers of gravity for nutrients, Masksll and Mason (1930) pointed out in a cotton study that fertilizing fertilized ovules had a much higher dry weight than those pollinated at the end of the pollination period, demonstrating that plants are flowering and fertilizing After accelerating the transport of nutrients to the ovule in the cereal species, the cause of empty defects due to unfertilized or fertilized organic nutrients shortage of sake in recent years, Yin Hong Zhang and Shen Gong Lin and other research