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- W3151823756 abstract "【Objective】The effects of sowing date,density and topdressing on biological traits of silage maize were studied to propose appropriate technical cultivation measures for large-scale production. 【Method 】Taking silage maize Yuqingqingzhu 1 as experimental material,L16(43) mixed orthogonal test was designed. Three factors and four levels of the experiments were sowing periods: A1(March 18),A2(March 25),A3(April 1),A4(April 6); densities: B1(24.7 cm spacing,67500 plants/ha),B2( 22.2 cm spacing, 75000 plants/ha, B3( 20.2 cm spacing, 82500 plants/ha), B4(18.5cm spacing,90000 plants/ha); topdressings: C1(68.25 kg/ha of pure nitrogen),C2(96.75 kg/ha of pure nitrogen),C3(125.25 kg/ha of pure nitrogen),C4(153.75 kg/ha of pure nitrogen). Seedling stage,tasseling silking stage,maturity period,plant height,stem diameter,ear height,green leaf number in harvest period,and biological traits were recorded in details. 【 Result 】 Different densities, fertilizer levels and sowing dates all had different degrees of influence on bio-logical traits of silage maize. Among the three factors, R '(density range)was a key factor affecting silage maize biomass, which was followed by the amount of topdressing and sowing date. The highest yield( 74475 kg / ha) was achieved under the conditions of sowing date of March 25, planting density of 75000 per ha and pure nitrogen amount of 153.75 kg per ha. The best yield and ideal plant type could be obtained by cultivation technology of timely sowing(March 25-31),suitable close planting(75000-80000 plants/ha) and appropriate increase in the amount of fertilizer( pure nitrogen 130- 150 kg / ha). 【 Conclusion 】 Different densities, topdressing levels and sowing dates have different effects on biological traits of silage maize. The factor sequence affecting the biological yield is density, topdressing amount and sowing date. Timely sowing, rational close planting and increased dosage of fertilizer are beneficial for improving the biological yield of silage maize." @default.
- W3151823756 created "2021-04-13" @default.
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- W3151823756 date "2015-01-01" @default.
- W3151823756 modified "2023-09-24" @default.
- W3151823756 title "Comprehensive effects of sowing date,planting density and topdressing on silage maize Yuqingqingzhu 1" @default.
- W3151823756 hasPublicationYear "2015" @default.
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