CHINESE JOURNAL OF OIL CROP SCIENCES ›› 2023, Vol. 45 ›› Issue (1): 131-137.doi: 10.19802/j.issn.1007-9084.2021303

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Effects of foliar spraying potassium-containing organic water-soluble fertilizer on rapeseed growth and yield

Ya-ping CHEN1(), Xiao-tian ZHU1, Yue HONG1, Mao-run ZHOU1, Chao ZHENG1, Cui-ying WEI2, Mei-song ZHOU2, Yan YU1, Fu-gui ZHANG1, Yan-hua KAN3, Ke-jin ZHOU1()   

  1. 1.College of Agriculture, Anhui Agricultural University, Hefei 230031, China
    2.Agricultural Technology Extension Station in Zhangxi Town of Dongzhi County, Chizhou 247200, China
    3.Anhui Agricultural Science and Technology Education Center, Hefei 230022, China
  • Received:2021-12-06 Online:2023-02-25 Published:2023-03-03
  • Contact: Ke-jin ZHOU E-mail:chenyaping2146@163.com;zhoukejin@163.com


To improve the seed yield, foliar spraying of potassium fertilizer was studied to explore the effect of potassium-containing organic water-soluble fertilizer on rapeseed growth and yield. Cultivar Wangchengyou 8 was used as material, with 3 spraying periods (seedling, early bloom stage, seedling + early bloom stage) and 5 potassium-containing organic water-soluble fertilizer application rates (0, 375, 750, 1125, 1500 g) treatments. Two-factor randomized block test was designed. Results showed that, after spraying 750 g potassium-containing organic water-soluble fertilizer at rapeseed seedling or early bloom stage, growth and development indexes (including plant height, root neck thickness, and biomass) were significantly increased. And spraying twice at seedling and early bloom stage had a more significant impact on growth and development than spraying at a single period. Spraying 750 g per hectare at both seedling and early blooming increased the number of effective siliques per plant and seeds number per silique. An increase of 39.07% on seed yield and 44.22% on oil production per hectare were also observed compared with control. By spraying 750 g per hectare at seedling and early blooming stages, plant growth, yield, seed oil, and economic benefits could be significantly increased.

Key words: rapeseed (Brassica napus L.), potassium, potassium-containing organic water-soluble fertilizer, yield, economic benefits

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