摘要
１９９１～１９９４年采用根部土壤接种方法，鉴定了１０６份玉米自交系和杂交种对茎腐病的抗病性，筛选出抗病材料４０份，忻抗１号、掖单１３号、晋单２９号等７个新品种具有良好的防病增产效果。增施钾肥，特别是氮、磷、钾肥配合施用可提高植株抗病力，减轻病害发生。晚播、稀植均可推迟或减轻发病。应用以抗病品种为主、增施钾肥、适期晚播、适当稀植等农业栽培综合防治措施。在忻州、朔州等地示范推广５．４４万ｈｍ２，平均防治效果为７８．１％，增产１１．１％。
Field tests for 106 entries of corn inbred lines and hybrids resistant to stalk rot by the means of soil inoculation were carried out from 1991-1994. The results showed that 40 entries were rated resistance. The variety of Xinkang 1, Yedan 13 and Jindan 29 ect. have good resistence to the disease and the yield was high.' High K fertilizer application could increase the resistance of corn and decrease the disease incidence. Delaying SOWing time and thin planting could delay or decrease the disease occurence too. The integrated control methods, including planting resistance variety, increasing K fertilizer application, proper lately sowing and thin planting,were spred about 54 400hm2 in Xizhou and Suozhou. The average effect of control was 78. 1 % and the yield increased 11. 1 %.
出处
《山西农业科学》
1996年第4期31-35,共5页
Journal of Shanxi Agricultural Sciences
关键词
玉米
茎腐病
抗病品种
综合防治
Corn stalk rot
Resistant variety
Integrated control
