撑绿竹施肥次数研究

The Study of Fertilization Times of Bambusa pervariabilis×Dendrocalamopsis daii

研究采用田间随机区组试验,通过对撑绿竹不同施肥时期处理的立竹数、胸径和秆材产量进行比较,寻求撑绿竹最佳的施肥时期。结果表明,在施肥总量相同的条件下,1年施用3次(3、8、12月)的处理对产量的提高效应最好,其次是1年施用2次(3、8月),二者均具有较高的经济效益。1年施用1次(3月、8月或12月)对产量的效应较低,经济效益较低。1年施用1次的时候,在12月和3月施用效果较好。在生产实际中,考虑到劳力和费用问题,可以采用在3月和8月追肥2次。

In order to determine the best fertilization times, compared the culm numbers per clump, diameter at breast height （DBH） and yields of Bambusa pervariabilis X Dendrocalamopsis daii with different fertilization times through a randomized block field trials in study. The results showed that the yield of application fertilizer for 3 times a year was the highest, followed by application fertilizer for 2 times a year, both with higher econo^mic efficiency. The yield of application fertilizer for 1 times a year was the lowest, with lower economic efficiency. Application fertilizer in December and March was better than in August when application fertilizer 1 times a year. Taking into account the labor and costs, application fertilizer for 2 times a year in March and August can be appled in actual production.