授粉时间对棉铃形成的影响李俊兰张寒霜高鹏河北省棉花研究所石家庄０５００５１据报道，自然条件下棉花花粉粒从花药散出后，在２４ｈ内可有相当高的生活率，而开花时如果遇雨，花粉粒不能正常散发且膨胀破裂，不能正常授粉、受精，致使棉铃脱落。在北方棉区，由于棉花... Effect of pollination time on the formation of cotton boll  Li Junlan Zhang Hanshuang Gao Peng Hebei Institute of Cotton Shijiazhuang 050051 Cotton pollen grains are reportedly shed from anthers under natural conditions and have a very high life expectancy within 24 hours, , Pollen grains can not be normal distribution and rupture expansion, pollination can not be normal, fertilization, resulting in boll fall off. In the northern cotton area, due to cotton ...