【摘要】 在缺硼上壤上进行秦油２号移栽穴内底施硼肥（６．０—１８．０ｋｇ·ｈｍ－２硼砂）和蕾苔期喷施硼肥（１．５—７．５ｋｇ·ｈｍ－２硼砂）试验。结果表明：移栽穴内底施硼肥以施用１５ｋｇ·ｈｍ－２硼砂增产幅度最大，增产达４８７．５ｋｇ·ｈｍ－２，增幅２０．１％；蕾苔期喷施以施用４．５ｋｇ·ｈｍ－２硼砂增产幅度最大，增产达２６５．５ｋｇ·ｈｍ－２，增幅１１．０％；“花而不实”诛率、裂茎株率均随施硼砂量的增加而下降，菌核病发生率与硼肥用量无关。更多还原

【Abstract】 Trail was conducted to apply B to the subsoilin rape transplanting cave(6. 0- 18. 0kg borax. hm￣2) and to spray leaves with B in flower bud period(1. 5-7. 5 kg borax· hm￣2)in B deficiency soil. Results indicated that the yield was increased 487. 5 kg· hm￣2(the increasing rate was 20. 1% ) as compared with that of CK by applying 15kg borax. hm￣2 to thesubsoil in transplanting cave, and the increment was 265. 5 ·hm￣2(the increasing rate was11. o%) by spraying 4. 5 kg borax· hm￣2 to leave. in flower bud period. The floweringfruitless Plant rate and stem dehiscent Plant rate were diseasde by inereaing the amount of Bapplied. Incidence of sclertial disease was not related to the amount of B applied.更多还原