| 【Objective】The eliminating effect of chemical fertilizer and sunlight on Radopholus similis in soil
were studied.【Method】The experiment was conducted by adding chemical fertilizer to the soil infected with R. similis
and covering it with plastic films.【Result】The results showed that the soil temperature was raised by adding calcium
cyanamide or carbamide and covering the soil with white or black films. In the case that the highest average temperature in
the local area was above 38.8 ℃ , and the number of sunny days was above 31 days, the R. similis in soil could be eliminated
effectively by the method(adding calcium cyanamide or carbamide and covering soil with films) treating soil for no less than
5 weeks; in the case that the highest average temperature in the local area was above 37.6 ℃ , and the number of sunny days
was above 38 days, the R. similis in soil could also be eliminated by the method(adding calcium cyanamide or carbamide and
covering soil with films) treating soil for no less than 6 weeks. Among all the treatments, 1 L soil treated with 10 g calcium cyanamide and covered with white films had the best effect on increasing soil temperature.【Conclusion】In high temperature
seasons, the method of adding calcium cyanamide or carbamide and covering white or black films can eliminate the R. similis in
infected soil. |
