摘要
为提高森林单位面积产量 ,在尚志林业局小九林场 ,对落叶松 1～ 3年生人工幼林进行了施肥试验 ,结果表明 ,试验的 3种肥料二铵、过磷酸钙、尿素施肥效果差异极显著 ,最佳施肥量为 5 0g/株 ,造林第 2年和第 3年施肥效果较好 ,最佳施肥方法是距树 10cm ,深 10cm ,两侧施肥和四侧扎眼施肥 ,施肥时间为 6月初 ,施肥
The experiment of fertilizer application was conducted in a 1-3-year-old larch plantation in Xiaojiu Forest Farm of Shangzhi County, Heiongjiang Province to promote the yield per unit area of forest. The application results of diammonium phosphate, superphosphate and urea fertilizers were significant different. The optimum application dosage was 50 g per tree. Application fertilizer in the second year and third year after planting could bring about good result. The best application method is to dig 10 cm holes in depth at a distance of 10 cm from the tree. The best time for application is at the beginning of June, and it is best to fertilize twice.
出处
《防护林科技》
2002年第4期22-24,共3页
Protection Forest Science and Technology
关键词
落叶松
人工幼林
施肥技术
Larch
Plantation
Fertilizer application
