大面积低产油桐林改良配套技术

Technique of Improvement on Large Scale Low yield Tung Tree Forest

通过１４．２ ｈｍ ２ 高产试验和３３５．７３ ｈｍ ２ 示范推广，将先进的科学技术与当地的生产力水平相结合，使低产油桐林改良技术进行了检验。高产试验经过４ ａ 的科学管理，油桐林状况得到了较好的改善，桐籽产量由原来每公顷６３７．５ ｋｇ，增加到１ ６０８．６ ｋｇ，平均每公顷增产９７１．１ ｋｇ；示范推广由每公顷３７５ ｋｇ，提高到１ １６６．２５ ｋｇ，平均每公顷增加７９１．２５ ｋｇ；并对不同的管理和施肥方式，进行了较系统的研究，为更大面积的油桐低产林改良提供了可靠的技术依据。

Experiments on improvement of low yield tung tree forest have been conducted in an experimental forest with an area of 14.2 hm 2 and a technical extension forest with an area of 335.73hm 2 respectively in Fugong Couny,Yunnan Province.The growth condition of tung tree has been improved significantly after 4 years implementation of the project.The fruit yield of tung tree increased from 637.5 kg/hm 2 before the project to 1608.6 kg/hm 2 with an increment of 971.1 kg/hm 2 in 14.2 hm 2 experimenttal forest. While,in the 335.7hm 2 extension forest,the output improved from 375 kg/hm 2 to 1166.25 kg/hm 2 with an average increment of 790.5 kg/hm 2.During the experiment,fertilizing and forest management methods were studied systematically.This project provided reliable techique on improvement of large scale low yield Tung oil forest in the future.