What is spring crop rape : Spring crop rape seedlings need 10-20℃ temperature, after 15-20 days can be suitable for the central subtropical climate, warm winter areas.
(1) make full use of soil testing and fertilization technology results of scientific fertilization. Advocate the application of spring crop rape special formula fertilizer, the ratio of N: P: K = 10 ~ 13: 5 ~ 7: 7 ~ 9, while in the production process properly added sulfur and boron.
[Reference source: invention patent CN1453250A of the State Intellectual Property Office of the People's Republic of China]
(2) Supplementary application of boron fertilizer, zinc fertilizer and sulfur fertilizer to vegetable rape.
(3) Additional organic fertilizer was applied and green manure was planted using the hydrothermal resources after the vegetable rape harvest.
(4) Base fertilizer is applied at 6-8 cm below the soil of spring crop rape.
(5) Do a good job of soil moisture collection and moisture conservation, using water and fertilizer synergy to improve nutrient utilization efficiency and promote spring crop rape growth. 
[Reference only, please adjust the specific fertilization program for spring vegetable rape according to the actual soil conditions]
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