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为了克服黑龙江省春季地温低、干旱、风沙大等对落叶松育苗的影响,实现提早播种育苗,达到苗木速生、丰产、优质的目的。我们在海伦县国营苗圃、绥棱县国营苗圃、海伦东风乡林场等十二个点对三十四亩新播落叶松试用了地面增温剂,收到了良好的效果。将增温剂稀释液均匀喷洒在播后覆砂浇透了底水的床面上,每平方米施药量为150克,经观测效果是:
In order to overcome the low ground temperature in spring in Heilongjiang Province, drought, sand and other large impact on the larch nursery, to achieve early sowing seedlings, to seedling speed, high yield, high quality purposes. We had good results when we tested ground-heating agents on 34 acres of newly planted larch trees at twelve national parks including Helenshan State Nursery, Suiling County State-owned Nursery and Helen Dongfeng Township Forest Farm. Spraying the diluent of the warming agent evenly on the bed surface after the sowing, the amount of applied water per square meter is 150 grams. The observed effect is: