外源硼素对土壤库中硼素含量动态变化的影响  

Effect of Exogenous Boron to the Dynamic of Boron Content in Soil Library

作　　者：支金虎[1,2] 聂云疆[3] 齐龙杰[1] 王守坤[1] 

机构地区：[1]塔里木大学植物科学学院,新疆阿拉尔843300 [2]塔里木大学棉花科学研究所,新疆阿拉尔843300 [3]新疆生产建设兵团农二师30团,新疆库尔勒841000

出　　处：《塔里木大学学报》2010年第1期19-24,共6页Journal of Tarim University

基　　金：国家"十一.五"科技支撑计划课题(2007BAC20DB01-3);塔里木大学校长基金硕士项目(TDZKSS08002)

摘　　要：利用大田试验对施硼肥后土壤库中有效硼含量动态变化规律进行了研究，结果发现，在0～60cm深度以内，随着土壤深度的增加，有效硼含量逐渐降低。在0～20cm深度土层中，6月下旬，土壤有效硼含量水平会随着外源施硼水平的增加呈先升高后降低的趋势，8月上旬，土层中有效硼含量水平会随着外源施硼水平的增加呈先降低后升高的趋势，到一定用量时会保持不变。在20～40cm深度土层中，6月下旬，随着外源硼素水平的增加，土壤有效硼含量呈先升高后降低的趋势，8月上旬为先升高后降低然后再升高的趋势。外源硼素水平高低对40～60cm土层中有效硼含量影响不明显，9月下旬后对棉田土壤有效硼含量影响不显著。A field experiment was conducted to determine the responds of the variation of effective boron content in soil library to exogenously supplied boron. The result showed that, at the 0 - to 60 - cm depth, the effective boron content was gradual decreasing with the increasing of soil depth. In the 20 - to 40 - cm soil layer, the soil available boron content began to rise then fell with the level of exog- enous boron increased at the last 10 days of Jun. , and at the first 10 days of Aug. , the effective boron content decreased then declined until a constant level. At 20 - to 40 - cm soil depth, with the exogenously supplied boron level increased, soil available boron increased in the cotton bud stage, and then decreased at flowering stage. Meanwhile, the level of exogenous boron has a unconspicuous impact to soil available boron content in 40 - to 60 - cm soil depth, it has no prominent effect on soil available boron content of cotton field after the last ten days of Aug.

关 键 词：棉花 土壤库 硼含量 外源硼素 

分 类 号：S562[农业科学—作物学]