油菜精量直播栽培几个技术问题  

Technical Problems of the Precision Direct Seeding of Rapeseed Oil

作　　者：潘典进[1] 周江霞[2] 罗传贵 杨玲丹 龙永红[1] 王军华 钟贤红 郑文楼 

机构地区：[1]荆门市农业技术推广中心,湖北荆门448000 [2]湖北省油菜办公室,武汉430070 [3]荆门市东宝区农业技术推广中心,湖北荆门448100 [4]荆门市农业局,湖北荆门448000 [5]荆门市东宝区子陵镇农技服务中心,湖北荆门448100

出　　处：《湖北农业科学》2015年第4期784-787,共4页Hubei Agricultural Sciences

摘　　要：通过以单位面积播种粒数确定播种量的方法,进行了几个不同来源或类型油菜品种(组合)混播以及不同播种量的栽培试验,得出成苗率(P)经验值为47.97%~55.71%和单位面积精确播种量计算公式为W=N(收获株数)×G(千粒重)÷P(成苗率)÷1 000,供实际生产参考使用;不同来源品种(组合)混播栽培对控制油菜菌核病呈一定负面影响,没有表现增产作用;在每公顷收获株数45万株以内,产量随株数的增加而增加,单位面积产量与收获株数呈一定程度正相关关系。Based on the method that the seeding quantity per unit area is determined by the number of seeds, the mixture sowing of different sources or varieties （combination） and cultivation experiment of 5 different seeding amounts per hactecre from 0.45 to 1.05 million were carried out. The results showed that the obtained experience value for the seedling rate（P） was 47.97%~55.71%. The formula W for the precision seeding quantity unit area was W=N^G/P/IO00, which could be used in the application. The mixture sowing of different sources had negative impact on the control of Sclerotinia sclerotiorum with no effect of increasing yield. Within the range of 450000 strains （seedling number） harvested in each hactecre, the yield in- creased with the increase of the number of strains. The yield per unit area was positively correlated with the number of strains to some extent.

关 键 词：油菜 精量直播 混播栽培 成苗率 播种量 

分 类 号：S565.4[农业科学—作物学]