生态环境学报
生態環境學報
생태배경학보
ECOLOGY AND ENVIRONMENT
2013年
8期
1348-1352
,共5页
生物炭%土壤%根系分布%产量%番茄(Lycopersicon esculentum)
生物炭%土壤%根繫分佈%產量%番茄(Lycopersicon esculentum)
생물탄%토양%근계분포%산량%번가(Lycopersicon esculentum)
biochar%soil%root distribution%yield%tomato
采用室内盆栽试验定量分析方法,在砂壤土中掺加4种不同比例的生物炭(10、20、40、60 g·kg-1),研究了生物炭对砂壤土毛管持水量、番茄(Lycopersicon esculentum)不同生育期的生长性状及收获时根系特征和产量的影响。通过根系扫描仪和分析软件重点研究了砂壤土中掺入不同含量生物炭对番茄各根系参数的影响。结果表明:随着生物炭施入量的增加,土壤毛管持水量增大,各处理均高于对照,与对照相比平均增加1.46倍。施加生物炭促进了番茄根系的发育和产量的提高,每千克干土加40 g生物炭处理的主根长、主根直径、总根系鲜质量和产量分别是对照的1.20、1.24、1.21和2.67倍。每千克干土加20 g生物炭处理的总根表面积、总根体积和总根系密度分别是对照的1.15、1.17和1.80倍。主根直径与产量相关性最高,相关系数为0.845。生物炭对番茄根系形态特征的优化与产量的提高具有一定的促进作用。
採用室內盆栽試驗定量分析方法,在砂壤土中摻加4種不同比例的生物炭(10、20、40、60 g·kg-1),研究瞭生物炭對砂壤土毛管持水量、番茄(Lycopersicon esculentum)不同生育期的生長性狀及收穫時根繫特徵和產量的影響。通過根繫掃描儀和分析軟件重點研究瞭砂壤土中摻入不同含量生物炭對番茄各根繫參數的影響。結果錶明:隨著生物炭施入量的增加,土壤毛管持水量增大,各處理均高于對照,與對照相比平均增加1.46倍。施加生物炭促進瞭番茄根繫的髮育和產量的提高,每韆剋榦土加40 g生物炭處理的主根長、主根直徑、總根繫鮮質量和產量分彆是對照的1.20、1.24、1.21和2.67倍。每韆剋榦土加20 g生物炭處理的總根錶麵積、總根體積和總根繫密度分彆是對照的1.15、1.17和1.80倍。主根直徑與產量相關性最高,相關繫數為0.845。生物炭對番茄根繫形態特徵的優化與產量的提高具有一定的促進作用。
채용실내분재시험정량분석방법,재사양토중참가4충불동비례적생물탄(10、20、40、60 g·kg-1),연구료생물탄대사양토모관지수량、번가(Lycopersicon esculentum)불동생육기적생장성상급수획시근계특정화산량적영향。통과근계소묘의화분석연건중점연구료사양토중참입불동함량생물탄대번가각근계삼수적영향。결과표명:수착생물탄시입량적증가,토양모관지수량증대,각처리균고우대조,여대조상비평균증가1.46배。시가생물탄촉진료번가근계적발육화산량적제고,매천극간토가40 g생물탄처리적주근장、주근직경、총근계선질량화산량분별시대조적1.20、1.24、1.21화2.67배。매천극간토가20 g생물탄처리적총근표면적、총근체적화총근계밀도분별시대조적1.15、1.17화1.80배。주근직경여산량상관성최고,상관계수위0.845。생물탄대번가근계형태특정적우화여산량적제고구유일정적촉진작용。
According to the pot experiment and by quantitative analysis, effects of biochar with different treatments (10, 20, 40 and 60 g biochar per kilogram of dry soil) on capillary capacity of sandy loam soil, growth traits, root distribution and yield of tomato(Lycopersicon esculentum) were investigated.Various parameters on the root mainly been studied after using biochar through the root system scanner and analysis software. Results showed that biochar application in soil could increase capillary capacity and was 1.46 times higher than the control. Biochar plays a very important role in promoting root development and improve yield. Main root length and diameter, total root fresh weight and yield of the treatment with 40 g biochar per kilogram of dry soil respectively were 1.20, 1.24, 1.21 and 2.67 times higher than the control. Surface area, volume and density of total root of the treatment with 20 g biochar per kilogram of dry soil respectively were 1.15, 1.17 and 1.80 times higher than the control. Main root diameter and yield had a high correlation, and the correlation coefficient was 0.845. The applied biochar is a good measure to optimize the morphological character of roots and increase yield of tomato.