优质油菜史力丰生育特性及配套栽培技术研究

Studies on growth and cultivated techniques of high quality rapeseed Shilifeng

对优质油菜品种史力丰进行播期试验、密度和施氮量二因素试验表明 :( 1)在江苏泰州市沿江地区的适宜播期为 9月 10～ 15日 ,里下河地区为 9月 15～ 2 0日 ;( 2 )随移栽密度和施氮量增加 ,史力丰产量先增后减 ,以施用纯氮 2 70kg/hm2 、移栽 15× 10 4 株 /hm2 组合产量最高 ,达 2 6 0 9.7kg/hm2 ;( 3)单位面积有效角果和每角粒数随播期的提前、密度的增加而增加 ,随施氮量的增加先增后减 ;( 4)密度、施氮量对芥酸、硫甙和油分含量等品质指标具有调节作用。

The experiments of sowing date, density and N application were carried out at Taizhou, Jiangsu province, China. The results were as follows. (1) The suitable sowing date of Shilifeng was Sept.10～15 in the region of the near the Yangtse River and Sept.15～20 in the other region of Taizhou. (2) The seed yield increased firstly and then decreased as the density and N application increased. The maximum yield appeared at the treatment of N 270kg/hm2 and 15×104 plant/hm2. (3) The earlier the test sowed and the more the test set density, the more it got the pod number per unit area and the seed number per pod. But the pod number per unit area and the seed number per pod increased firstly and then decreased as the N application increased. (4) The erucic acid, glucosinolate and the content of oil were affected by density and N application.