毛竹实生苗造林基肥种类比较研究

用复合肥、钾肥、磷肥及饼肥4种不同基肥进行毛竹实生苗造林试验,连续3年对其各项生长指标进行观测调查,结果表明:4种不同基肥对毛竹实生林生长均有明显的促进作用,其中第1年和第3年生长效应较弱,第2年效应明显,竹冠幅、地径、竹高等指标差异显著.主要生长指标均大于对照,不同基肥种类对毛竹生长的影响有较大差异,其中复合肥作用效果最好,钾肥作用效果最差.最后讨论了产生第3年后生长效应减弱的原因.

The Comparative Study on the Base Fertilizers in Moso Bamboo Afforestation with Seedlings

Moso bamboo seedling plantations with four types of base fertilizers,i,e. , compound, potassium, phosphorous and cake fertilizer, were made. Their various growth index was observed. It was showed that all four base fertilizers an important played role in promoting growth of bamboos. The growth performance in the second year was better than that in the first and the third year. The differences of crown size, diameter, and height were significant among years. The growth in various fertilization experiments existed large differences, but better than that in the controll. The performance of the compound fertiliation was the best and the potassium was the worst. Reasons for difference in growth are also discussed.