作　　者： ; ; ; ; (虎净）;

机构地区： 石河子大学农学院新疆生产建设兵团绿洲生态农业重点实验室

出　　处： 《石河子大学学报（自然科学版）》 2015年第3期270-274,共5页

摘　　要： 在大田条件下,通过对棉花植株部分叶片施硼、不同硼施用频率以及配合山梨醇施硼,研究不同施硼方式对棉株硼的吸收、和转运规律。结果表明:施硼显著提高植株体内硼含量,但硼的移动性不强,叶面施硼棉花吸收的硼主要存在于植株的叶片中,而茎的硼含量下降;对棉株部分叶片涂硼发现叶片吸收的硼可向其他部位转移,转移量占总吸收量的9.98%,其中叶片间的转移占总转移量的28.82%;山梨醇对硼的吸收有一定的促进作用,植株吸硼量比单纯施硼肥提高了38%,生殖器官的硼的吸收量提高了23.28%;随着施硼次数的增加,叶的吸硼量占总吸收量的比例呈先增后减趋势,茎和根呈降低趋势,壳和籽粒呈增加趋势,硼的总吸收量呈增加趋势。因此,硼在棉花体内转移能力较弱,施硼配合山梨醇以及少量多次施用有利于硼的吸收和转运。 Boron uptake and partitioning rule were studied in a field trial by partially leaf boron application,different application frequency and boron applicat ion combined with sorbitol in this study. The result indicated that boron application significantly increased boron uptake in cotton,while mobility of boron in plant turned weak,and boron uptake by leaf mainly stayed in leaves that absorb boron directly. Boron application leaded to a decrease in boron content in stem compared with control. Part- leaf boron application experiment showed that only 9.98% boron absorbed by B- applied leaf could be transmitted into other parts,among of which,the transporting value between leaves was 28.82%. Sorbitol can promote the absorption of boron,and the absorption amount increases 38% compared with the amount under the condition of single boron application. Sorbitol mainly helped boron to transfer to reproductive organ,and the absorption amount of boron in reproductive organ increased 23.28%compared with the amount of single boron application. High frequency of boron application promoted boron uptake initially and decreased afterwards in leaves,and boron content in stem and roots decreased with the increase of boron application frequency,whereas boron content in shell and seeds increased with the increase of boron application frequency. Therefore,the transfer ability of boron in cotton plant was relatively weak,and boron application with sorbitol or multiple spraying is beneficial to the absorption and transport of boron.

关 键 词： 棉花 硼 吸收量 分配量

领　　域： [农业科学]