1998年宝山区良种场对“武运粳7号”部分田块进行了穗肥试验,一块在8月10日施尿素10kg(下称中肥)作促花肥;另一块在8月10日施10kg尿素的基础上,于8月14日再补施5kg尿素作保花肥(下称重肥)。经10月上旬一次台风影响,灌浆后期两种施肥田均出现不同程度的倒伏,中肥田约倒伏 1998 Baoshan District seed field “Wu Yunjing 7” part of the field spike fertilizer test, one on August 10 applied urea 10kg (hereinafter referred to as fertilizer) to promote flower fertility; the other on August 10 Shi Shi On the basis of 10kg of urea, on August 14 and then apply 5kg of urea for fertilizer (hereinafter referred to as heavy fertilizer). Affected by a typhoon in early October, two kinds of fertilization fields in late filling stage showed different degrees of lodging,