摘要
为研究稀土对大豆荚果干物质及籽粒中氮积累量的动态影响规律,揭示其与产量形成的内在关系,以东北典型不同品质类型的大豆东农42(高蛋白型)、东农47(高油脂性型)和东农52(兼用型)为试验材料,采用盆栽方式种植,在苗期和初花期分别叶面喷施不同浓度的LaCl_3、CeCl_3和LaCl_3+CeCl_3溶液,测定大豆初荚至成熟期干物质和氮积累量的动态变化。结果表明:初荚后20~40 d为干物质和氮素积累的主要时期,40 d后积累速度减缓,呈现慢快慢的增长趋势。适宜浓度的稀土溶液可以提高大豆干物质和氮积累总量及最终产量,且稀土对各指标的影响程度因大豆品质型的不同而存在差异性。东农42在60 mg·L^(-1)CeCl_3处理下干物质、氮积累总量和产量均最高,较对照分别显著增加22.66%、38.41%和39.48%。东农47在30 mg·L^(-1)CeCl_3处理下3个指标均最高,较对照分别显著增加18.71%、31.62%和29.62%。东农52在30 mg·L^(-1)CeCl_3处理下3个指标均最高,其中氮积累总量较对照显著增加13.10%,干物质和产量分别增加6.80%和4.20%,但差异不显著。由此看来,稀土铈的处理效果最佳,且对高蛋白大豆的促进作用最大。
In order to study the dynamic effect of rare earth elements on dry matter accumulation in soybean pods and nitrogen accumulation in soybean seeds, find the relationship between dry matter and nitrogen accumulation and yield formation, Dongnong 42 （high-protein）, Dongnong 47 （high-fat） and Dongnong 52 （intermediate） of different genotypes in Northeast China were used as experimental materials. The samples were tested by spraying different concentrations of LaCl3 , CeCl3 and LaCl3 ＋ CeCl3 solution on the leaves in the seedling stage and flowering stage, and measured the changes in dry matter and ni-trogen accumulation from pod to maturity in soybean. The results showed that the main accumulation period of dry matter and nitrogen was 20-40 days after initial pod, and then the accumulation rate slowed down, showing a slow-fast-slow growth trend. Suitable concentrations of rare earths solution could increase the dry matter and nitrogen accumulation and the yield of soy-bean, the effects of rare earth elements on dry matter and nitrogen accumulation were different due to different soybean geno-types. Under the treatment of 60 mg＂ L-l CeC13 , the total amount of dry matter and nitrogen accumulation and yield of Dongnong 42 were the highest, and significantly increased by 22. 66%, 38. 41% and 39.48% compared with the control. Under the treatment of 30 mg-L-1 CeC13, the three indexes of Dongnong 47 were the highest, with a significant increase of 18.71%, 31.62% and 29.62% compared with the control. Under the treatment of 30 mg ＂L-l CeC13, the three indexes of Dongnong 52 were the highest, the total amount of nitrogen accumulation was significantly increased by 13.10% compared with the control, and the dry matter and yield increased 6. 80%, 4. 20% respectively, but the difference were not significant. Therefore, the treatment effect of rare earth cerium was the best, and Dongnong 42 had the largest increase in all indicators.
作者
李昊阳
张兴文
陈海燕
白露
陶佩
苗艳丽
任红玉
LI Hao-yang;ZHANG Xing-wen;CHEN Hai-yan;BAI Lu;TAO Pei;MIAO Yan-li;REN Hong-yu(College of Resources and Environmental Sciences, Northeast Agricultural University, Harbin 150030, China;College of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China)
出处
《大豆科学》
CAS
CSCD
北大核心
2018年第3期385-392,共8页
Soybean Science
基金
国家自然科学基金(31471440)
关键词
镧
铈
大豆
氮积累量
干物质积累
Lanthanum
Cerium
Soybean
Nitrogen accumulation
Dry matter accumulation
