摘要
Abstract
To explore the high yield and high efficiency cultivation of maize in Heilongjiang province ,Demeiya 1 was used as experimental material by two factors split plot design ,the main fertilizer treatment factor for a to‐tal of three levels ,that A1 (urea 280 kg·hm‐2 ,diammonium 210 kg·hm‐2 ,potassium sulfate 70 kg·hm‐2 ) , A2(urea 400 kg·hm‐2 ,diammonium phosphate 300 kg·hm‐2 ,potassium sulfate 100 kg·hm‐2 ) ,A3 (urea 520 kg·hm‐2 ,diammonium phosphate 390 kg·hm‐2 ,potassium sulfate 130 kg·hm‐2 );at the planting density (b) deputy district , set five different planting densities (60 000 , 75 000 , 90 000 , 105 000 and 120 000 plants·hm‐2 ) to study the planting density and fertilizer amount on the yield and main agronomic traits .The results showed that there were significant effects of yield in different planting density and fertilizer on Demeiya 1 .Under the condition of the same planting density ,with fertilization increasing row number per ear ,grain number and 1 000 grain weight were increased first and then decreased trend ,and ear diameter ,ear length , seed rate of Demeiya Ⅰ showed a trend of gradually increased with the fertilizer increased ,at the same level of fertilizer ,ear length ,ear diameter and row grain number decreased gradually with the increase of density ,and 1 000 grain weight was increased first and then decreased trend ,and when the planting density B3 ,1 000 grain weight ,the weight of 337 .23 g .In addition ,the fertilizer and density combination A2B3 treatment (urea 400 kg·hm‐2 ,potassium sulfate 100 kg·hm‐2 ,diammonium phosphate 300 kg·hm‐2 ,90 000 plants·hm‐2 ) was the highest ,followed by the A3B3 treatment (urea 520 kg·hm‐2 ,potassium sulfate 130 kg·hm‐2 ,diammonium phosphate 390 kg·hm‐2 ,90 000 plants·hm‐2 ) .关键词
德美亚1号/施肥量/密度/农艺性状/产量Key words
Demeiya 1/fertilizer rate/planting density/agronomic characters/yield分类
农业科技
