我圃全体职工在认真学习毛主席著作提高觉悟的基础上,一致认为提早进行播种是培育杉木壮苗大苗的关键。它既能使苗木提前扎根、加速生长,又可促进苗木提早木质化、减少病害、保证正常生长。但因冬季气侯严寒,经常下霜和冷风袭击,给冬播育苗工作带来了严重威胁,如果没有有效措施,就会造成苗木大量死亡,影响育苗任务的完成。如我圃七三年 On the basis of conscientiously studying Chairman Mao’s writings and raising awareness, all our staff and workers agreed that early sowing is the key to cultivating seedlings of Chinese fir seedlings. It can make seedlings take root in advance, accelerate the growth, but also promote early lignification of seedlings, reduce disease and ensure normal growth. However, due to the cold winter climate, frequent frost and cold wind attacks have posed a serious threat to winter sowing and nursery work. Without effective measures, a large number of seedlings will be killed and the completion of nursery tasks will be affected. If I nursery seven or three years