Response of Dry Matter Accumulation and Yield of Winter Rapeseed to Fertilizer Management

LIUZhewen, WANGLuman, LIANGLipeng, DICui, RENHang, FULijie, TIANDongliang, TIANGuoying, FUYali

Chin Agric Sci Bull ›› 2026, Vol. 42 ›› Issue (12) : 17-22.

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Chin Agric Sci Bull ›› 2026, Vol. 42 ›› Issue (12) : 17-22. DOI: 10.11924/j.issn.1000-6850.casb2025-0841

Response of Dry Matter Accumulation and Yield of Winter Rapeseed to Fertilizer Management

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Abstract

The study aimed to clarify the optimal fertilizer management scheme for winter rapeseed of the Chinese cabbage type in northern regions, and to understand the effects of different types and application rates of compound fertilizers on the dry matter accumulation and yield of winter rapeseed, thereby achieving green and efficient production. The experiment was conducted using winter rapeseed cultivar ‘Tianyou 1358’, a registered variety in Hebei Province, as the test material. Two compound fertilizer types were set: balanced fertilizer (C1) and rapeseed-specific fertilizer (C2), alongside seven application rates: 150 kg/hm2 (N1), 300 kg/hm2 (N2), 450 kg/hm2 (N3), 600 kg/hm2 (N4), 750 kg/hm2 (N5), 900 kg/hm2 (N6), and 1050 kg/hm2 (N7). The responses of dry matter accumulation and yield of winter rapeseed to fertilizer management were examined during the 2023-2024 growing season. The results indicated that: (1) the balanced fertilizer applied at the N5 rate and the rapeseed-specific fertilizer applied at the N4 rate significantly enhanced yield components, thereby increasing seed yield. (2) At the same application rate, the dry matter accumulation of rapeseed treated with rapeseed-specific fertilizer was higher than that with balanced fertilizer. The application of rapeseed-specific fertilizer promoted dry matter accumulation at the maturity stage to a certain extent and increased its contribution to seed yield; however, excessive fertilizer application failed to further improve dry matter accumulation in various vegetative organs. (3) Dry matter in winter rapeseed plants was primarily distributed in stems/branches, pod shells, and seeds, with the order of dry matter accumulation across organs being stems/branches> pod shells> seeds> roots. In conclusion, considering the yield-determining factors of winter rapeseed, rapeseed-specific fertilizer is more favorable for dry matter accumulation related to yield, thereby facilitating yield improvement. Among the seven fertilizer rates tested, the application rates of 750 kg/hm2 for balanced fertilizer and 600 kg/hm2 for rapeseed-specific fertilizer resulted in the highest rapeseed yield and dry matter accumulation, effectively promoting seed yield formation.

Key words

winter rapeseed / compound fertilizer / fertilizer amount / agronomic traits / dry matter accumulation / yield components / fertilizer management

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LIU Zhewen , WANG Luman , LIANG Lipeng , et al . Response of Dry Matter Accumulation and Yield of Winter Rapeseed to Fertilizer Management[J]. Chinese Agricultural Science Bulletin. 2026, 42(12): 17-22 https://doi.org/10.11924/j.issn.1000-6850.casb2025-0841

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刘晓伟, 鲁剑巍, 李小坤, 等. 直播冬油菜干物质积累及氮磷钾养分的吸收利用[J]. 中国农业科学, 2011, 44(23):4823-4832.
【目的】了解高产直播冬油菜的养分吸收和利用规律。【方法】高产栽培条件下,在冬油菜整个生育期内定期取样,测定油菜各部位干物质量和养分含量,计算各生育时期氮、磷、钾养分积累量,明确甘蓝型冬油菜在4 500 kg&bull;hm-2产量条件下的干物质积累及氮、磷、钾养分吸收利用规律。【结果】直播冬油菜总干物质积累呈&ldquo;S&rdquo;形曲线,表现为薹花期>苗期>角果成熟期。根、茎、绿叶、落叶的干物质量分别在播种后185、200、130、230 d达最大值,干物质量分别为2 286、5 450、2 306、2 162 kg&bull;hm-2。各器官氮含量(籽粒除外)随生育时期的推进逐渐降低,苗期变化平缓,蕾薹期后降幅较大。茎、绿叶中磷含量苗期略有上升,蕾薹期后迅速降低。根、落叶、角壳中磷含量则持续下降。根、茎中钾含量在苗期波动较大,蕾薹期后迅速降低。叶片中钾含量在苗期略有降低,其后一直稳定。落叶中钾含量一直波动变化,无明显规律。氮、钾的积累规律相似,出苗后持续增加,花期达最大值,而后略有下降,两者积累量均表现为苗期>蕾薹期>花期。整个生育期磷积累量持续上升,表现为角果期>苗期>薹花期。高产栽培条件下直播油菜N、P、K最大养分需求量分别为217.6、39.9、219.8 kg&bull;hm-2,需求比例为1.00﹕0.18﹕1.01。【结论】除落叶和生殖器官外,各器官干物质积累量、养分含量、养分积累量均呈现苗期升高花期后降低的变化趋势。根、茎、叶中的部分养分在花期后会转移到籽粒中,保证直播冬油菜花期前充足的养分供给是高产的前提。
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