摘要
为了确定‘泸糯8号’高产高效栽培适应的种植密度和施肥量,运用群体生理学的方法,采用两因素四水平完全组合试验设计,研究了不同种植密度和施肥量对杂交糯高粱‘泸糯8号’产量的影响。结果表明,密度低于11.25万株/hm2时,杂交糯高粱的产量随密度的增加而增加;超过11.25万株/hm2时,杂交糯高粱的产量又随密度的增加而减少。当施氮量低于纯氮187.5 kg/hm2时,杂交糯高粱的产量随施氮量的增加而显著增加,当施氮量高于187.5 kg/hm2时,杂交糯高粱的产量随施氮量的增加无显著增加。随着密度的增加,杂交糯高粱的穗粒数、千粒重、倒5叶叶面积、茎粗均显著减少(小),株高则显著变高。随着施氮量的增加,杂交糯高粱的穗粒数、倒5叶叶面积、茎粗均随之增加而增加,千粒重则是先增加后减小。当施氮量超过纯氮150 kg/hm2时,株高随施氮量的增加而降低。由此得出,处理A3B3即种植密度为11.25万株/hm2,施肥量为纯氮187.5 kg/hm2最为适宜。
In order to determine the ‘Lunuo8＇ high yield and high efficiency cultivation adaptation ot planting density and fertilizer application amount, we used population physiology methods, by two factors and four levels combination experiment design, studied the effect of different planting density and fertilizer on waxy sorghum hybrid ‘Lunuo8＇ yield. The results showed that, the density was lower than that of the 112500 strains/hm2, hybrid glutinous sorghum production and increase with the increase of density; but if more than 112500 strains/hm2, hybrid glutinous sorghum production and with the increase of density and reduce. When the amount of nitrogen under pure nitrogen at 187.5 kg/hm2, hybrid glutinous sorghum production with increasing nitrogen rate increased significantly, when the nitrogen content was higher than 187.5 kg/hm2 hybrid glutinous sorghum production with the increase of nitrogen fertilizer amount without significant increase production. As the density increased, the hybrid glutinous sorghum grain number per spike, grain weight, pour 5 leaf area, stem diameter was significantly reduced （small）, plant height were significantly higher. As the density increases, the hybrid glutinous sorghum grain number per spike, grain weight, pour 5 leaf area, stem diameter was significantly reduced, plant height was significantly higher. With the increase of nitrogen application amount, hybrid glutinous sorghum grain number per spike, 5 leaf area, stem diameter increased with increasing, 1000-grain weight increased first and then decreased. When the amount of nitrogen than pure nitrogen at 150 kg/hm2, plant height with the increase of nitrogen fertilizer amount and reduce. Thus, when the planting density of 112500 strains/hm2, the fertilization was pure nitrogen at 187.5 kg/hm2, A3B3 for the most appropriate.
出处
《中国农学通报》
CSCD
2013年第30期112-117,共6页
Chinese Agricultural Science Bulletin
基金
国家高粱产业技术体系"酿酒(糯)用高粱品种选育"(CARS-06-01-05)
四川省财政基因工程"酿酒高粱有利基因材料创制与新品种选育"(2011JYGC11-31)
关键词
种植密度
施氮量
高粱
产量
planting density
nitrogen
sorghum
yield
