成年阿月浑子根系分布规律的研究

Research on Distribution Regularity of the Mature Pistachio Root System

采用壕沟法对阿月浑子根系的分布规律进行研究,结果表明,成年阿月浑子的根系水平分布可达4.08 m,是树高的0.96倍,是树冠的1倍.垂直分布可达1 m以下土层.≥10 mm根集中分布在树体周围0.58 m附近,垂直分布在20～40 cm范围.5～10 mm的根水平分布集中在0.58 m处,垂直分布集中在60～80 cm范围.2～5 mm的根水平分布集中在0.58 m处,垂直分布集中在40～60 cm范围.≤2 mm的根水平分布集中在1.28 m范围,垂直分布集中在40～60 cm范围.因此,在造林时,阿月浑子的最小栽植密度应为4 m×4 m,田间灌溉渗透深度达60cm左右即可,土壤管理以10～15 cm浅耕为主,施肥在1.28 m的附近.从调查的重量、体积、长度和表面积的结果看,重量和体积的数据接近,两者取其一,但体积更有代表性.

The research on distribution regularity of the mature pistachio root system is avail of the ditch means . The experiment proved that the horizortal distribution of root system could reach 4.08m, which is 0.96 time as the highth oras the crowrt,and the vertical distribution may be spreaded out soil layer （〈1 m）. The distribution of root（〉10mm） is concentrated on the tree body around 0.58 m.With the sharply decrease of the span ,the vertical distibution is concentrated on the range from 20 cm to 40cm, and the horzortaldistributionofroot（5-10mm） is almost the place（0. 58 m）. the vertical distibution is concentrated on the range from 60cm to 80 cm ,and the horzortal distribution of root（2-5 mm） is almost the place（0.58 m）. the vertical distibution is concentrated on the range from 40cm to 60cm ,and the horzortaldistribution of root（〈2 mm） is almost the place（1.28 m）. Therefore,at the planting, the smallest plant density of pistachio is 4 m × 4 m, the filed irrigating permeated profundity can get to about 60 cm, managing the soil can mainly use shallow plowing 10-15 cm ,applying fertilizer profundity about 1. 28 cm. As investigated consequence of the weight, volume,length, surface area, the data of weight and volume approached the fact data, one of them could be chosen, but the volume is more available.