Effects of Different Organic Fertilizers, Sowing Rates, and Harvesting Times on the Growth and Yield of Brassica rapa

In order to explore the effects of different organic fertilizers, sowing rate and harvesting time on the growth and yield of Brassica rapa, Jinpin Brassica rapa No.5 was used as the test variety. Then, the single factor experiment was conducted, and five kinds of fertilizer types (Haizhuangyuan bio-organic fertilizer, Yaliyali bio-organic fertilizer, Gepin bio-organic fertilizer, granular sheep manure, rotten chicken manure), three sowing rates (4.0, 8.0 and 12.0 g) and three harvesting times (23rd, 25th and 27th day after sowing) were set up, respectively. On the basis of single factor test, L9 (3³) orthogonal test was further carried out. The results showed that in the single factor experiment, the treatments with the highest yield of Brassica rapa in the plot were the organic fertilizer applied with Yaliyali bio-organic fertilizer, the sowing amount of 12.0 g, and the harvesting time being on the 27th day after sowing. In the orthogonal test, the influence degree of the three factors was as follows: harvesting time > seeding rate > fertilizer type. The yield of Brassica rapa was the highest under the conditions of using Yaliyali bio-organic fertilizer, the seeding rate of 12.0 g, and the harvesting time being on the 27th day after sowing. Under this condition, the yield was 28352.9 kg·hm⁻², and the commercial value was good.