摘要
在陕西眉县选择农田土壤养分含量不同的地块,研究不同含量的有机质,碱解氮、速效磷、速效钾与玉米果穗穗部性状及产量的关系。试验结果表明,土壤含碱解氮、速效磷、钾在临界值以下时,随着三元素有效含量的增加,玉米果穗长、结实长,行粒数,穗粒数,千粒重和产量都在明显提高。土壤分析结果表明,目前大多数农田土壤有机质、速效磷、钾肥不足,需要增加有机肥、磷、钾肥的投入。
In order to study the relationship between yield,maize ear treats and organ matter, N-OH,available P and K, we selected field block with different soil nutrition in Mei county, Shaanxi province. The result showed that under the level of N-OH,available P and K in the soil, the ear length,seed length,kernel per row,kernel per ear,1000-kemel weight and yield increased with increasing the available N,P and K. To improve organ matter, available P and K would increase yield for there are defiance organ matter,available P and K in the soil.
出处
《中国农学通报》
CSCD
2005年第8期107-108,157,共3页
Chinese Agricultural Science Bulletin
基金
国家863计划批准项目"玉米高产
高效技术示范推广"(2001AA241054)
