Effect of Diammonium Phosphate on Seed Yield and Its Components of Psathyrostachys juncea cv.‘Mengnong No.4’(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Title:: Effect of Diammonium Phosphate on Seed Yield and Its Components of Psathyrostachys juncea cv.‘Mengnong No.4’

Author(s):: GONG Qing1; ZHANG Zhong1; CHUN Lan1; LI Shusen2; YUN Jinfeng1; (1.Colloge of Ecology and Environmental Science,Inner Mongolia Agricultural University，Hohhot,Inner Mongolia 010010；2.Grass Station Zhenglanqi Inner Mongolia,Shangdu,Inner Mongolia 027200)

Keywords:: Psathyrostachys juncea cv.‘Mengnong No.4’; diammonium phosphate; seed yield; seed yield components

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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Last Update: 2016-08-29