Abstract:

In this study, we conducted experiments on the application of different fertilizer ratios in saline alkali land, the results showed that the large amount of chemical fertilizer used in Zizania latifolia field can increase the tillering of Zizania latifolia, but the shell weight was relatively small, and the net rate of Zizania latifolia and yield of 667m² were also low. In addition, the nitrate content in Zizania latifolia increased, while the content of ascorbic acid and soluble sugar decreased. In this experiment, we reduced the amount of chemical fertilizer used in the Zizania latifolia field and replaced the base fertilizer with organic fertilizer. It not only promoted the growth and development of Zizania latifolia plants, increased the shell quality, but also improved the net rate and quality of Zizania latifolia, enhanced plant resistance, etc. Moreover, Zizania latifolia with an organic fertilizer dosage of 800 kg per 667 m² in the base fertilizer exhibited better quality, yield and resistance than the dosage of 600 kg per 667m². Therefore, within a certain range, increasing the amount of organic fertilizer will also increase the yield and quality of Zizania latifolia. Besides, replacing ternary compound fertilizer with specialized fertilizer for Zizania latifolia can also increase the shell weight and 667 m² yield, improve the quality of Zizania latifolia, but the effect and disease resistance were not as good as applying organic fertilizer. Moreover, the net rate of Zizania latifolia has not been significantly improved. However, further study is needed to determine whether the application of organic fertilizer in combination will significantly increase the yield and quality of Zizania latifolia.

Key words: fertilizer treatment, saline alkali soil, Zizania latifolia, yield, quality