广西绿肥专用型油菜品种(系)比较试验

开展绿肥专用型油菜品种(系)比较试验,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,通过田间试验对其生育期、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,筛选适宜广西地区种植和推广的绿肥油菜品种(系)。在低肥力投入情况下,油菜品系P112、油菜品种中油杂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3280-4208 kg/亩530-624 kg/亩;氮磷钾养分还田量分别为9.40-11.89 kg/亩、1.17-1.54 kg/亩和23.15-28.78 kg/亩。油菜品系P112、油菜品种中油杂19、油肥1号和油肥2号在广西省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。

Comparative experiment on varieties (lines) of green manure rapeseed in Guangxi Province

A comparative experiment was conducted on the varieties (lines) of green manure rapeseed to screen out the varieties suitable for planting in Guangxi"s paddy fields, so as to provide reference for the promotion and soil improvement of green manure rape in Guangxi province. Taking 12 rapeseed varieties (lines) as the research object, field experiments were conducted to analyze and compare their growth period, plant height, biomass and nutrient content at full-bloom stage, comprehensively evaluate their ecological adaptability and characteristics as green manure, and screen out more suitable green manure rapeseed varieties (lines) for planting and promotion. Under the condition of low fertilizer input, the biomass and nutrients of N, P, K returned to field were the highest in rapeseed lines P112, rapeseed varieties Zhongyouza 19, Youfei 1 and Youfei 2, which with the highest fresh grass yield (3280-4208 kg/mu) and dry matter yield (530-624kg/mu), returned the highest N (9.40-11.89 kg/mu), P (1.17-1.54 kg/mu) and K (23.15-28.78 kg/mu). Rapeseed lines cultivar P112, rapeseed varieties Zhongyouza 19, Youfei 1 and Youfei 2 were planted in Nanning, Guangxi province, with better comprehensive performance and ecological adaptability, and more suitable for promotion in this area.