|Table of Contents|

Effects of Sowing Date on the Main Agronomic and Quality Traits of Black Pakchoi

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2024年5
Page:
48-52
Research Field:
Publishing date:

Info

Title:
Effects of Sowing Date on the Main Agronomic and Quality Traits of Black Pakchoi
Author(s):
QIU LiangCHENG YujingGE LijiaoZHAI CaijiaoWANG XiaoqiuLIU Shuidong
(Jiangsu Yanjiang Institute of Agricultural Sciences,Nantong,Jiangsu 226541)
Keywords:
black pakchoisowing dateagronomic traitquality trait
PACS:
S 649
DOI:
10.11937/bfyy.20233763
Abstract:
Taking black pakchoi as the test material,a sowing date was set every 5 days from September 5th,and a total of 7 sowing dates were set to study the effects of different sowing dates on the main agronomic and quality traits of black pakchoi,in order to provide reference for the standardized planting and production of black collapse vegetables and the extension of their supply period.The results showed that the sowing date had significant effects on main agronomic traits,such as development degree,weight per plant,content of soluble sugar and chlorophyll,but had little effect on cellulose and crude protein.The spread degree and single plant quality of black pakchoi seeded on September 10th were significantly higher than other treatments.The stalk length of black pakchoi seeded on September 15th was the longest,and the number of leaves of black pakchoi seeded on September 20th was the highest.The growth index of black pakchoi seeded on September 5th and September 30th was significantly lower than those seeded from September 10th to September 20th.The quality of single plant of black pakchoi seeded on October 5th was lower than 100 g,which did not meet the product standard.With the delay of the sowing date,the soluble sugar content of the leaves and petioles of the black pakchoi decreased first and then increased.The soluble sugar content of the leaves of the black pakchoi seeded on September 20th and the petioles of the black pakchoi seeded on September 25th decreased significantly,and the soluble sugar content of the leaves of the black pakchoi seeded on September 30th and the petioles of the black pakchoi seeded on October 5th increased significantly.With the delay of the sowing date,the chlorophyll of black pakchoi leaves as a whole showed a trend of first increasing and then decreasing.The chlorophyll a,chlorophyll b and total chlorophyll of black pakchoi leaves were the highest in the sowing date of September 10th,and the chlorophyll a,chlorophyll b and total chlorophyll of black pakchoi leaves were the lowest in the sowing date of October 5th.The experiment showed that the suitable sowing time of black pakchoi in the middle and lower reaches of Yangtze River was from mid-early September to late September,and the latest sowing time was the end of September.

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Last Update: 2024-03-28