川西平原免耕晚直播甘蓝型油菜新品种比较试验研究

Comparative Study on No-tillage Late Direct-Seeding Varieties of Brassica napus L. in Western Plain of Sichuan

川西平原秋季多绵雨,为避开播种期湿害影响,筛选适合川西平原生态区免耕晚直播的甘蓝型双低油菜新品种,以10个甘蓝型油菜新品种为试材,采用随机区组排列,3次重复,免耕晚直播,稻草覆盖,进行比较试验。结果表明‘川油58’‘、华油杂10号’和‘宁杂11号’产量高,折合单产3000 kg/hm2以上,综合性状表现较好、生育期短、抗性好、品质优;‘华油杂13号’和‘浙双3号’有高产潜力,单产2775 kg/hm2以上,抗性好、品质优、生育期适中;其他品种较对照减产极显著、综合性状表现较差,抗性较差。‘华油杂10号’、‘宁杂11号’、‘华油杂13号’和‘浙双3号’等长江中下游优异品种可以成功引种并在川西平原进行大面积推广种植。

There are continuous rainy days in autumn in the western plain of Sichuan.In order to avoid the impact of wet injury in sowing days and to screen new Brassica napus varieties with low erucidic acid and glucosinolate content and suitable for no-tillage late direct-seeding in the western plain of Sichuan,ten Brassica napus varieties were involved,as well as a randomized block design,no-tillage late direct-seeding and straw mulching.The results showed the superiority of the varieties‘Chuanyou 58’,‘Huayouza 10’and ‘Ningza 11’over the other varieties,as revealed by high-yield（over 3000 kg/hm2）,short growth stage,better resistance,quality and integrated traits.The varieties‘Huayouza 13’and‘Zheshuang 3’had high yield potential（over 2775 kg/hm2）,better resistance and quality and moderate growth stage.The other varieties had significant yield reduction less than control,and poor expression of comprehensive traits and resistance.The excellent varieties of the middle and lower Yangtze River,such as‘Huayouza 10’,‘Ningza 11’,‘Huayouza 13’and‘Zheshuang 3’,could be successfully introduced and planted at the large scale in the western plain of Sichuan.