山核桃施肥的经济效益分析

山核桃是浙江省临安县的特产。经过连续4年的施肥证明山核桃产量和质量有明显的提高:施尿素肥的4年平均产量779.6kg/hm~2,增产32.7％;施复合肥的4年平均产量809.5kg/hm~2,增产37.7％.种子的百粒重也有所增加。

Economic Analysis of Applying Fertilizer to Carya cathayensis Forest

Carya cathayensis Sarg. (Cathay hickory) is a special product of Lin'-an county, Zhejiang province, PRC. Applying fertilizer to Cathay hickory forest before flowerage and after fruitage can promote growth of naked bud, differentiation of flower bud and development of fruit. Furrow application was employed in this study. According to the size of trees, 1 to 2 kg fertilizer was used per tree per time. The results showed that the average seed yield of fertilizing urea Cathary hickory forest increased by 32.7 per cent than that of unapplication, complex fertilizer 37.7 per cent. Hundred-grain weight of the seed increased too.