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油桐林地问种农作物,是油桐产区群众习惯的一种经营方式。为了探讨桐农间种对油桐生育及产量的影响,我们自1981年起在方集、段集乡设点试验,经对试验林生育因子的调查测定,表明间种能促进油桐生长发育,提高产量。现将试验研究和调查材料整理如下: 一、试验概况 1、方集乡吴上楼村新楼小队的段家湾,海拔350米,坡度15度,坡向西北,黄棕壤、桐林面积150亩,试验林面积3亩。1973年直播造林,品种为叶里藏,每亩46
Turmeric woodland asked planting crops, is a habit of the management of the production area of tung tree. In order to investigate the effect of Tongnong seed on the growth and yield of Tung oil tung, we set up a pilot plantation in Fangji and Duanji Township since 1981 and investigated the fertility of Tangelin ,Increase production. Now the experimental research and survey materials are as follows: First, the test profile 1, Fang Jixiang Wu Shanglou village new building team Duan Jiawan, 350 meters above sea level, slope of 15 degrees, northwest slope, yellow brown soil, Tong Lin area 150 Mu, test forest area of 3 acres. Live broadcast afforestation in 1973, the variety of leaves in Tibet, 46 acres per acre