苗圃应用化学除草剂“氟乐灵”技术研究

为了有效地控制苗圃杂草,为造林提供足够的优质苗。我们选用了新型的林业化学除草剂——氟乐灵（Frifluralin）进行苗圃除草试验研究。于四月下旬,用2550～3000ml/hm~2剂量,在苗圃喷雾土壤处理,效果良好。对以禾本科为主的杂草的除草效果达80～90％以上,除草率比人工拔草提高五倍以上,比除草醚除草提高二倍以上,节约用工50～90％,节约除草成本90％以上。不仅广谱、高效、低毒、无环境污染,而且苗木质量明显提高,是一种值得推广的苗圃化学除草剂。

The Technical Research of Using Chemicalherbiclde Frifluralin in the Forestry Nursery

In order to effectively controll the growth of weeds in the nursery, and tp provide enough seedlings of higher quality for silciculture, we have selected a new type of [forestry chemical herbicide Frifluralin to get rid of the weeds by experiments. During theylast ten days in April we sprinkled the nursery with the dose of 2550ml to 3000ml/hm2. Its result is quite satisfying. 80 to 90 percent of the weeds of Gramineae were killed. The efficiency of killing weeds is over five times more than that of pulling weeds by hand, and is over twice more than that of uitofen.It can save labour by 50 to 90 percent, and reduce the cost by 90 percent.It is very efficent,less poisonous,without any pollution, and what is more, the seedlings can grow better than before. It is indeed a kind of chemical weed killer for nursery, therefore worth popularizing.