河南农业大学学报2019，Vol.53Issue(2)：175-179,186,6.
钾肥对苦荞灌浆特性、根系形态及充实度的影响
Effects of potassic fertilizer on filling characteristics,root morphology,and plumpness of tartary buckwheat
摘要
Abstract
Tartary buckwheat"Jinqiao 2"(JQ 2) was selected as the material to investigate the effects of different potassic fertilizer treatments on filling characteristics,root morphology,agronomic traits, plumpness,and yield of the wheat. The results showed that 24 kg·hm - 2 treatment of medium potassic treatment (MK) reached the highest value of initial growth power (R0) comparing with the control. When the filling rate achieved maximum,it took the shortest time for MK and the longest time for CK in the four potassium fertilizer treatments. The maximum root surface area and root volume of JQ 2 were those of treatments with MK,and the CK was the lowest. Under the 12 kg·hm - 2 treatment of low potassic treatment (LK) ,the root length and root cap ratio of JQ 2 could attain the highest value, while the CK was still the lowest. The bleeding intensity was lowest with the LK treatment. The maximum of plant height,1 ～ 2 internode diameter,node and branch number of main stems,as well as plumpness and yield for JQ 2 were achieved by the treatment of MK. Furthermore,the cotyledon node height and 1 ～ 2 internode length of JQ 2 was the strongest with 48 kg·hm - 2 high potassic treatment (MK). There were significant differences among different potassic treatments. These results indicated that the medium potassic treatment (MK) promoted the grain filling,and increased the plumpness and the final yield of tartary buckwheat.关键词
苦荞/钾肥/灌浆特性/根系/充实度/产量Key words
tartary buckwheat/potassic fertilization/filling characteristics/root/plumpness/yield分类
农业科技引用本文复制引用
周良,黄小燕,王炎,李振宙,吴兴慧,李振东,孔德章,陈庆富,黄凯丰..钾肥对苦荞灌浆特性、根系形态及充实度的影响[J].河南农业大学学报,2019,53(2):175-179,186,6.基金项目
国家自然科学基金项目(31560358) （31560358）
国家重点基础研究发展计划(973计划) 前期研究专项(2014CB160312) （973计划）
贵州省科技支撑计划项目(黔科合支撑[2018]2297号) （黔科合支撑[2018]2297号）
贵州省教育厅创新群体重大研究项目(黔教合KY字[2017]033) （黔教合KY字[2017]033）
