【摘要】 通过采取丛状造林、林木截冠、林分疏伐、人工授粉等不同的技术措施,对红松的结实率和结实量进行调查研究,结果表明:红松丛状造林中3株1丛和5株1丛植生组造林20年后,结实率达70%以上,比单植提高46%;4种不同截冠的处理方法均有明显的促进结实效果,其结实数量比对照提高109%~142%;红松采取疏伐措施,其强度疏伐区(43%)结实率达91%,比对照提高33个百分点,中度疏伐区(32%)结实量最高,比对照提高23%;人工授粉的红松坐果率比未授粉的提高12%~71%。更多还原

【Abstract】 By taking different technical measures(massive planting,reproduction by topping of forest trees,stand thinning,artificial pollination)to Pinus koraiensis,the seed setting rate and seed yield were conducted.Result shows that:afforestation by vegetation group(one clump by three trees &one clump by five trees)20 years after planting in massive planting Pinus koraiensis plantation,the seed setting rate are 70%,which increase by 46% compared with the single planting;four kinds of treatments of reproduction by topping of forest trees are significantly different all have significant effects of yield,the yield amount increase by 109%-142%;adopting thinning method,the seed setting rate of Pinus koraiensis in intensity thinning area(43%)are 91%,which increase by 33% than CK;the seed setting rate of Pinus koraiensis in moderate thinning area(32%)is the highest,increase by 23% than CK;fruit setting rate of Pinus koraiensis by artificial pollination increase by 12%-71%compared to that without pollination.更多还原