施肥对农田土壤螨季节性变化的影响

Effects of fertilizing on seasonal variation of soil mites in farmland.

对农田土壤螨季节性变化进行试验研究结果表明,农田土壤螨1年有2个发生高峰,即春季5月份高峰和秋季8～9月份高峰。EM堆肥区土壤螨数量年波动平缓,稳定性高;化肥区土壤螨数量年波动性大,中气门目土壤螨7月份后才出现。

The seasonal variations of soil mites are studied in farmland of experiment station of China Agricultural University, Quzhou County, Hebei Province. The results show that the numbers of soil mites vary with seasons and the peaks of variation appear in May and from August to September. Fluctuation of number in the plots using organic fertilizer changes less than in the plots using chemical fertilizer during the year. Mesostigmata mites are found in the plots using chemical fertilizer after July.