Through pot experiment cultivated with earth, the results showed that it would severely affect the rate of emergence and time of emergence for the seeds coated with the ultra-fine coat agent of 5% diniconazole under the condition of low temperature treatment immediately after planting. The rate of emergence was 42.1%~52.9%, and the time of emergence were later for 3 days than that of control. The stress of low temperature after sowing and the seeds swelling the time of emergence showed no effect on the time of eminence, but it had a little negative effect on the rate of seedling emergence. The ratio of the agent to seed was 1:100~1:150, the rate of emergences was 10% lower than that of control; there was no difference for the emergency rate for the ratio of 1:200~1:300 with control, but the seedling growth was affected severely. Compared it with control, the plant height decreased 4.5~5.6cm, the dry weight of per 100 plants decreased 2.0~5.9g, the fresh weight of per 100 plants decreased 36~59g.
|
