【摘要】 35℃以上的高温是诱导棉花雄性败育的主导因素,尤以田间作物活动层高温影响最直接。相对高湿对幼蕾败育和当日花药开裂没有影响。田间作物活动层高温与最高气温间存在y=0.4+1.04x关系,败育蕾开花期在高温后15天左右,两者之间呈y=15.08+1.01x直线回归。根据以上公式可推测田间能否发生败育蕾及其开花期,以便及早采取预防或及时补救措施。高温前叶面施硼能减轻败育程度及减少败育花数量。更多还原

【Abstract】 The male sterile in cotton is induced mainly by the high temperature above 35℃, particularly by the high temperature of the field crop active layer. The abortion of flower buds and the split of anther are not influenced by the relative high humidity.The relation between the high temperature of the field corp active layer and the highest air temperature is y=0.4+1.04x. The anthesis of the abortive flower buds is at about the fifteenth day after the high temperature occurs.The relation between them is y=15.08+1.01x.The abortion of flower buds and anthesis can be forecast by means of the above mentioned formulas to take prevent or remedial measures.Before the high temperature occurs, spraying boron fertilizers is effectire for decreasing the abortive extent and the quantity of abortive flowers.更多还原