不同收获时间对威宁芜菁甘蓝产量的影响

Effect of Harvest Time on The Yield of Brassica napobrassica(L.)Mil1. cv. Weining

采用大田栽培试验研究了不同收获时间对威宁芜菁甘蓝生物学特性和种子经济性状的影响。结果表明:芜菁甘蓝块根和茎叶最佳收获期为3月下旬,可获得最高的块根产量49 608.5 kg/hm2、茎叶产量33 211.0 kg/hm2和总产量82 819.5 kg/hm2;芜菁甘蓝种子最佳收种期为完熟期,此时收种能获得最高的种子产量,种子千粒重达2.2 g,而且种子品质好,发芽率高;芜菁甘蓝种子产量与单株有效角果数、每角实粒数和千粒重呈显著正相关关系。

The biological characteristics and seed economic traits of Brassica napobrassica （L.）Mill from different harvest times were investigated by a field cultivation experiment. The result showed the best harvest time of root and leaves was at the end of March. The highest root tuber yield, leaf yield and the total yield were 49 608.5 kg/hm^2, 33 211.0 kg/hm^2 and 82 819.5 kg/hm^2, respectively. The best harvest time of seeds was full ripe stage, when the seed yield was the highest and thousand grain weight was 2.2 g, therefore seeds have good quality and high rate of germination. Seed yield demonstrated remarkably a positive correlation with the efficient pods per plant, seeds per pod and thousand grain weight.