文档介绍：安徽农业科学, , ( ):
J. Anhui Agric. Sci. 2021 49 17 136-139 [ Objective] To reveal the effect of nitrogen,phosphorus and potassium deficiency on the growth and development of pakchoi.
[Method]The leaf number,leaf length,leaf width,fresh weight,dry weight,leaf area,root length and root-to-crown ratio of pakchoi treated with
complete nutrient solution and nitrogen,phosphorus and potassium deficient nutrient solution were measured. [ Result] Nitrogen deficiency,
phosphorus deficiency and potassium deficiency inhibited the increase of leaf number,leaf length,leaf width,fresh weight,dry weight and leaf
area,while phosphorus deficiency inhibited the increase of root length and root-crown ratio. Leaf number: CK> phosphorus deficiency = potas-
sium deficiency > nitrogen deficiency,leaf length: CK> potassium deficiency > nitrogen deficiency,leaf width: CK> potassium deficiency,
phosphorus deficiency,leaf area: CK> potassium,nitrogen > phosphorus,fresh weight: CK> phosphorus deficiency,dry weight: CK> potassium
deficiency > phosphorus deficiency. [Conclusion] Nitrogen,phosphorus and potassium could promote the growth and development of pakchoi,
and increase the root length,leaf length,leaf width,leaf area and weight of