| 摘要: |
| 采用311-A最优混合设计,研究了西农11号杂交种施肥量及密度和产量之间的关系。结果表明,在一定范围内,产量随密度和施肥量增加而增加,其中密度对产量作用最大,施氮量次之,施磷量最小;在中等肥力土壤上要获得9000～10800kg/hm2 的目标产量,应留苗52500～60000株/hm2 ,施氮肥93.75kg/hm2以上;若施氮肥562.5kg/hm2 ,并配施适量磷肥 ,留苗63750株/hm2,可望获得10800kg/hm2以上的高产。 |
| 关键词: 玉米,产量,施肥量,密度,最优混合设计 |
| DOI： |
| 分类号:S513 |
| 基金项目:全国农牧渔业丰收计划项目(980222) |
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| High-yielding cultivated measures on maize hybrid Xinong 11 |
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YUN Hai-yan LI De-xiao LUO Shu-Ping WANG Jing
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| Abstract: |
| The optimum mixture design 311A is used to study the relationship between yield and cultivated measures,including nitrogen-phosphorus rates and density of population in maize hybrid Xinong 11.The results show that yield increases along with upward density and fertilizer rates in a certain scope,but the contribution of density to the yield is the most and of phosphorus rates the smallest.In order to obtain the yield from 9 000 to 10 800 kg/hm2,it is necessary to ensure a density ranging from 52 500 to 60 000 plants/hm2 and nitrogen 93.75 kg/hm2 in middle fertility field.It is possible to obtain the yield of over 10 800 kg/hm2 with nitrogen 562.5 kg/hm2,density 63 750 plants and moderate phosphorus. |
| Key words: maize,yield,fertilizer rates,density,optimal mixture design |
