Abstract:

Introducing suitable varieties for local promotion and cultivation, can promote increased income for local farmers and agricultural development. The latest Meiyu Jia Tiannuo 25 developed by Hainan Lvchuan Seedling Co., Ltd. was used as the research object, and Meiyu 7 was used as the control to conduct sowing time and planting density experiments. The results indicated that the later the spring sowing period, the shorter the growth period; the later the summer sowing period, the longer the growth period, and the effect of planting density on the growth period was not significant. The results of variance analysis showed that the yield of Meiyu Jia Tiannuo 25 was significantly higher than that of Meiyu 7 (P<0.05). The yield differences between different sowing dates and planting densities reached significant levels (P<0.05) and extremely significant levels (P<0.01), respectively. The average yield was highest at a planting density of 4 200 plants per 667 m², and the average yield was highest during the sowing period on July 20th. Variety, sowing time, and planting density all had a significant or extremely significant impact on appearance quality, with the highest appearance quality score observed on April 5th during the sowing period and at a planting density of 2 800 plants per 667 m². The cooking quality of Meiyu Jia Tiannuo 25 was significantly higher than that of Meiyu 7 (P<0.05). There was the extremely significant difference in cooking quality among different sowing dates (P<0.01), with the highest cooking quality score observed on April 5th. However, there was no significant difference in cooking quality among different planting densities. The quality total score of Meiyu Jia Tiannuo 25 was 2.2 points higher than that of Meiyu 7, and the difference in quality total score was extremely significant (P<0.01). The difference in quality total scores among different sowing dates was extremely significant (P<0.01), with the highest quality total score observed on April 5th. The difference in quality total scores among different planting densities reached a extremely significant level (P<0.01), with the highest quality total score at a planting density of 2 800 plants per 667 m². And the differences in quality total scores caused by the interaction between varieties and sowing dates, as well as the interaction between planting density and sowing dates, all reached the extremely significant level (P<0.01).

Key words: maize, Meiyu Jia Tiannuo 25, sowing date, planting density, analysis of variance