GONG Qing,ZHANG Zhong,CHUN Lan,et al.Effect of Diammonium Phosphate on Seed Yield and Its Components of Psathyrostachys juncea cv.‘Mengnong No.4’[J].Northern Horticulture,2016,40(15):75-78.[doi:10.11937/bfyy.201615019]
磷酸二铵对“蒙农4号”新麦草种子产量及其构成因子的影响
- Title:
- Effect of Diammonium Phosphate on Seed Yield and Its Components of Psathyrostachys juncea cv.‘Mengnong No.4’
- Keywords:
- Psathyrostachys juncea cv.‘Mengnong No.4’; diammonium phosphate; seed yield; seed yield components
- 文献标志码:
- A
- 摘要:
- 以“蒙农4号”新麦草为试材，采用不同追肥时期（果后营养期、返青期、孕穗期，处理代号记为T1、T2、T3）,不同追肥量（33.3、66.7、100.0、133.3、166.7 g?m-2，处理代号记为N1、N2、N3、N4、N5）对“蒙农4号”新麦草进行田间试验，研究了磷酸二铵对“蒙农4号”新麦草种子产量及其构成因子的影响，以期为生产实践提供理论依据。结果表明：追施磷酸二铵可以明显提高6年生“蒙农4号”新麦草种子产量，以果后营养期追施166.7 g?m-2的效果最佳，种子产量达到最大值为1 546.44 kg?hm-2，比对照提高了355%。影响“蒙农4号”新麦草种子产量的主要因子是生殖枝数;小穗数、千粒质量、每小穗小花数和每小穗种子数对种子产量影响较弱。
- Abstract:
- Psathyrostachys juncea cv.‘Mengnong No.4’ was used as test material，different fertilizer period (after the nutrition of fruit，turning green，booting stage，referred to as T1,T2,T3)，different amount of fertilizer (33.3,66.7,100.0,133.3,166.7 g?m-2，referred to as N1,N2,N3,N4,N5) on the Psathyrostachys juncea cv.‘Mengnong No.4’ field trials were used to conduct field experiment.The effects of diammonium phosphate on Psathyrostachys juncea cv.‘Mengnong No.4’ seed yield and its components were studied，in order to provide a theoretical basis for production practice.The results indicated that the optimum applied diammonium phosphate could significantly improve the six-year-old Psathyrostachys juncea cv.‘Mengnong No.4’ seed yield in the period of post-fruiting vegetation growth was 166.7 g?m-2 and performance of seed yield was 1 546.44 kg?hm-2,improved by 355% compared with the CK.The main factors affecting Psathyrostachys juncea cv.‘Mengnong No.4’ seed yield was the fertile tillers，the weak effect of spikelet and thousand-seed weight，while the number of florets per spikelet and seeds per spikelets.
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备注/Memo
第一作者简介：巩青（1990-），男，硕士研究生，研究方向为牧草栽培。E-mail：gongqing7799@163.com.责任作者：张众（1962-），男，博士，教授，研究方向为牧草栽培育种。E-mail：drzhzh@126.com.基金项目：国家农业科技成果转化资金资助项目（2013GB2A400075）；内蒙古自治区科技计划资助项目（20140175）。