作物杂志,2026, 第5期: 189196 doi: 10.16035/j.issn.1001-7283.2026.05.022
赵佳1(
), 王晓勇1, 张轶珺2, 裴红宾2, 高振峰3(
)
Zhao Jia1(
), Wang Xiaoyong1, Zhang Yijun2, Pei Hongbin2, Gao Zhenfeng3(
)
摘要:
为探究解磷菌Bacillus vallismortis gz4-1生物有机肥在苦荞栽培中的减磷增效潜力,以晋荞6号为供试材料,采用盆栽试验,设置常规施肥(CK)、全量生物有机肥(P0)及梯度减磷1/2(P1)、1/3(P2)、1/4(P3)、1/5(P4)配施生物有机肥处理,系统分析其对苦荞生长、生理特性、产量及磷素吸收的影响。结果表明,P3处理显著促进苦荞花期的生长,其株高(60.08 cm)、茎粗(5.01 mm)、茎叶干重(4.25 g)、主根长(21.66 cm)、根系表面积(0.785 m2)、根系体积(6.97 cm3)和根系干重(0.77 g)均为处理间最大值;同时,该处理下超氧化物歧化酶(498.91 U/g)和过氧化物酶活性[67.41 U/(g·min)]较CK处理分别提升26.67%和27.04%,根系活力[0.8288 μg/(g·h)]与叶绿素含量(11.37 mg/g)分别增加46.27%和10.49%。产量方面,P3处理单株粒重(3.06 g)和千粒重(15.83 g)较CK处理分别显著提高27.50%和10.54%,籽粒可溶性蛋白(15.10 mg/g)和黄酮含量(2.19%)较CK处理分别显著提升24.17%和60.76%。磷素动态分析显示,P3处理在收获期根系、茎部和叶片磷含量较CK处理分别增加23.68%、14.16%和9.03%。综上,磷肥减量1/4配施gz4-1生物有机肥是苦荞高产优质栽培的适宜用量。
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