SHK-6对不同群体下大豆花荚脱落及其产量的调控  

EFFECT OF SHK-6 APPLICATION ON ABSCISSION OF FLOWER AND POD AND YIELD IN DIFFERENT DENSITY

作　　者：张海峰[1] 张明才[1] 翟志席[1] 段留生[1] 李召虎[1] 黄淮 陈刚 

机构地区：[1]中国农业大学农学与生物技术学院农学系,100094 [2]天津宝坻区农技推广中心,301900 [3]河南中牟农业技术学校,456600

出　　处：《大豆科学》2007年第1期78-83,共6页Soybean Science

基　　金：国家重点新产品计划(2005ED1050002);农业科技资金项目(05EFN217100434)

摘　　要：以“冀豆12”为材料,在大田条件下通过在初花期对不同群体大豆施用SHK-6,研究了植物生长调节剂SHK-6对不同群体条件下大豆产量及其构成因素的调控作用。结果表明:SHK-6能够明显的提高各个群体下的大豆产量(8.0%),在密度水平为30株/m2的条件下施用SHK-6产量达到最高。调节剂SHK-6能够提高单株花数(13.0%)、荚数(14.8%)、粒数(10.9%)、荚重(16.4%)、粒重(12.3%),并且能够提高百粒重(2.4%)、粒茎比(15.0%)。虽然SHK-6处理也增加不同密度水平下的花荚脱落数,但对脱落率没有影响。SHK-6能够降低叶面积指数(LAI)、提高下层叶片的光截获率(群体透光率)和下层叶片的叶绿素的含量。可见冠层结构的优化是导致产量提高的根本原因。Field research was conducted to study the effects of SHK-6 application at R1 on soybean yield and yield components in different density using soybean eultivar ＂Jidou12＂. The results indicated that SHK-6 significantly increased the yield, and the highest yield was observed when applying 100mg/L SHK-6 application at 40 plants/m2. In addition, the following parameters were increased by SHK-6 application： flower number （13.0%）, pod number （14. 8%） seed number （10.9%）, pod weight （16.4%） and seed weight （12.3%） per plant, 100-seed weight （2. 4%）, and seed/stem ratio （15.0%）. On the other hand, SHK-6 application also increased the abscission number of flower and pod, but did not affect the percentage of the abscission. SHK-6 application decreased LAI, and increased low-layer canopy light interception and chlorophyll content. This could be responsible for yield increase.

关 键 词：生长调节剂SHK-6 大豆 花荚脱落 产量 

分 类 号：S565.1[农业科学—作物学]