【摘要】 在宁南地区对紫花苜蓿不同刈割期对比试验结果表明,提前和及时刈割对病虫害有很好的防效,尤其对蓟马和褐斑病效果较好。5月下旬至6月上旬为宁南山区紫花苜蓿的最佳刈割期,二茬苜蓿的最佳刈割期在7月底至8月上旬。更多还原

【Abstract】 Field experiments were conducted on the effects of mowing on alfafa pests in south Ningxia.Results indicated that mowing in advance or in time could effectively control alfafa pests,especially for thrips and brown spot disease.The optimal time for the first mowing was between late May and early June,for the second sowing was from the end of July to early August.更多还原