【摘要】 本文通过对露天盆栽柑桔苗上黑刺粉虱若虫体长的系统测定，测得黑刺粉虱若虫（蛹为４龄）的体长增长通式为０．４４８５×１．５１７３ｎ－１。更多还原

【Abstract】 The body length of citrus spiny blackfly on the citrus planted in pot at the open ground was systematically measured,it is implied that the general fomula of the body length increase of the nymph (pupa as 4th instar)of citrus spiny blackfly is 0 4485×1 5173 n-1 .更多还原