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为了提高西洞庭湖管理区朝鲜蓟的产量,通过测土配方施肥技术进行了3414田间试验,初步探讨了西洞庭管理区朝鲜蓟施肥指标体系。结果表明:朝鲜蓟的目标产量与地力产量之间存在明显的正相关;无N区的朝鲜蓟相对产量与土壤中碱解氮含量没有明显相关性;而无P区和无K区的相对产量与土壤中的有效磷和速效钾有较好的相关性;最后提出了不同肥力水平下西洞庭湖管理区朝鲜蓟种植的磷钾肥丰缺指标以及氮磷钾肥的推荐施用量。
In order to improve the yield of artichoke in West Dongting Lake management area, 3414 field experiment was carried out by soil testing and formula fertilization technology, and the fertilization index system of artichoke was studied in Xi Dongting Management Area. The results showed that there was a significant positive correlation between the target yield of artichoke and soil fertility. There was no significant correlation between the relative yield of artichoke in soil without N and the content of alkali-hydrolyzable nitrogen in soil. The relative yield And the availability of available phosphorus and available potassium in the soil had a good correlation. Finally, the author put forward the indices of phosphorus and potassium fertility and the recommended application rates of N, P and K in Artichoke cultivated in West Dongting Lake under different levels of fertility.