广西绿肥专用型油菜品种(系)筛选试验

Screening Experiment on Green Manure Rape Varieties(Lines) of in Guangxi

为筛选出适宜广西稻田种植的绿肥油菜品种(系),为广西地区绿肥油菜的应用推广提供参考,以12个油菜品种(系)为研究对象,开展了绿肥专用型油菜品种(系)筛选试验,并对其生育期、株高以及盛花期生物量和养分含量等进行分析比较,综合评价其生态适应性和肥用性状。结果表明,在低肥力投入情况下,油菜品系P112、中油杂19、油肥1号和油肥2号在盛花期的生物量及氮、磷、钾养分还田量相对较高,鲜、干草产量分别达49 200~63 120 kg/hm^(2)和7 950~9 360 kg/hm^(2),氮、磷、钾养分还田量分别为141.00~178.35、17.55~23.10、347.25~431.70 kg/hm^(2)。由此说明,P112、中油杂19、油肥1号和油肥2号在南宁市种植的综合表现较好,生态适应性佳,适宜在该地区种植和推广。

In order to screen out the suitable green manure rape varieties(lines) for planting in Guangxi paddy fields,provide reference for the utilization and promotion of green manure rape in Guangxi, taking 12 rape varieties(lines) as the research object, a comparative experiment was conducted on green manure rape varieties(lines), the growth period, plant height, biomass and nutrient content at full-bloom stage were analyzed and compared, and the ecological adaptability and characters as green manure were comprehensively evaluated. The results showed that, under the condition of low fertilizer input,the biomass at full-bloom stage and nutrients of N, P, K returned to field of P112, Zhongyouza 19, Youfei 1 and Youfei 2 were the relatively higher, the fresh grass yield reached 49 200-63 120 kg/hm^(2), the dry matter yield reached 7 950-9 360 kg/hm^(2),returned N, P and K reached 141.00-178.35, 17.55-23.10, 347.25-431.70 kg/hm^(2), respectively. Therefore, P112, Zhongyouza19, Youfei 1 and Youfei 2 planted in Nanning City had better comprehensive performance and ecological adaptability, which were suitable for planting and promotion in this area.