中国土壤与肥料
中國土壤與肥料
중국토양여비료
SOIL AND FERTILIZER SCIENCES IN CHINA
2014年
4期
87-90
,共4页
滨海%盐化潮土%台田%苹果%根系%改良壕沟法
濱海%鹽化潮土%檯田%蘋果%根繫%改良壕溝法
빈해%염화조토%태전%평과%근계%개량호구법
coastal%salinized soil%platform field%apple%roots%modified oskamp
为了探讨滨海盐化潮土台田对苹果根系分布的影响,采用改良壕沟法进行了调查。在滨海盐化潮土台田土壤中,12年生八棱海棠砧长富2号苹果根系水平分布距离6．02 m,为冠径的2．43倍。距离树干1、2、3、4 m处,根量分别占观察剖面根量的26．5%、20．4%、22．3%和18．7%,共占87．9%。根垂直分布深1．5 m,为树高的45．2%。根集中分布在5~120 cm土层内。根有分层分布的趋势,第一层分布在5~20 cm土层内,第二层在70~120 cm土层内。直径<0．5、0．5~2．0、2．0~5．0、5．0~10．0和>10．0 mm的根,分别占总根量的64．4%、30．3%、3．6%、1．0%和0．7%。不同粗度的根,水平分布都较远；0~5 cm土层只有直径<2．0 mm的细根,5~120 cm土层中各类根都有,130 cm以下土层中也主要是直径<2．0 mm的细根。在滨海盐化潮土台田中苹果根系的分布呈“综合型”。
為瞭探討濱海鹽化潮土檯田對蘋果根繫分佈的影響,採用改良壕溝法進行瞭調查。在濱海鹽化潮土檯田土壤中,12年生八稜海棠砧長富2號蘋果根繫水平分佈距離6．02 m,為冠徑的2．43倍。距離樹榦1、2、3、4 m處,根量分彆佔觀察剖麵根量的26．5%、20．4%、22．3%和18．7%,共佔87．9%。根垂直分佈深1．5 m,為樹高的45．2%。根集中分佈在5~120 cm土層內。根有分層分佈的趨勢,第一層分佈在5~20 cm土層內,第二層在70~120 cm土層內。直徑<0．5、0．5~2．0、2．0~5．0、5．0~10．0和>10．0 mm的根,分彆佔總根量的64．4%、30．3%、3．6%、1．0%和0．7%。不同粗度的根,水平分佈都較遠；0~5 cm土層隻有直徑<2．0 mm的細根,5~120 cm土層中各類根都有,130 cm以下土層中也主要是直徑<2．0 mm的細根。在濱海鹽化潮土檯田中蘋果根繫的分佈呈“綜閤型”。
위료탐토빈해염화조토태전대평과근계분포적영향,채용개량호구법진행료조사。재빈해염화조토태전토양중,12년생팔릉해당침장부2호평과근계수평분포거리6．02 m,위관경적2．43배。거리수간1、2、3、4 m처,근량분별점관찰부면근량적26．5%、20．4%、22．3%화18．7%,공점87．9%。근수직분포심1．5 m,위수고적45．2%。근집중분포재5~120 cm토층내。근유분층분포적추세,제일층분포재5~20 cm토층내,제이층재70~120 cm토층내。직경<0．5、0．5~2．0、2．0~5．0、5．0~10．0화>10．0 mm적근,분별점총근량적64．4%、30．3%、3．6%、1．0%화0．7%。불동조도적근,수평분포도교원；0~5 cm토층지유직경<2．0 mm적세근,5~120 cm토층중각류근도유,130 cm이하토층중야주요시직경<2．0 mm적세근。재빈해염화조토태전중평과근계적분포정“종합형”。
In order to discuss the influence of the coastal salinized soil on apple root system distribution in the platform field coastal salinized soil, research be proceeded by the modified oskamp method. In the coastal salinized soil of platform field soil, the roots distribution distance of “Fuji Nagafu No. 2” apple with 12 years old rootstock ( Malus robusta Rehd) was 6. 02 m, and crown diameter was 2. 43 times. The root amount in the distance of 1, 2, 3, 4 m to the trunk accounted for 26. 5%, 20. 4%, 22. 3%, 18. 7% of the total root amount, totally 87. 9%. Vertical distribution of root was 1. 5 m deep, and was 45. 18% of the tree height. Most root was distributed in the 5~120 cm soil layer, and showed a layering distribution. The depth of the first layer was 5 to 20 cm, the second was 70 to 120 cm. The ratios of roots with diameter of <0. 5, 0. 5~2. 0, 2. 0~5. 0, 5. 0~10. 0, >10. 0 mm were 64. 4%, 30. 3%, 3. 6%, 1. 0% and 0. 7% of the total root respectively. The horizontal distribution of distance of different diameters was diferent, in the 0 to 5 cm soil layer there was only roots with diame-ter <2. 0 mm, various types of root could be found from 5 to 20 cm soil layer, under the 130 cm soil layers only roots with di-ameter <2. 0 mm was found. Apple root distribution was comprehensive in the platformcoastal salinized field soil.
