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对吉林省中部两种栽培模式下大豆干物质及养分累积特征的分析,拟探明不同栽培模式下植株生育特征及氮磷钾累积特性。结果表明,高产栽培模式产量为2 268.0kg·hm-2,比常规栽培模式增产16.3%;干物质积累较常规栽培模式提高26.8%。与常规栽培模式相比,高产栽培模式对氮、磷、钾的吸收量明显增加,较常规栽培模式分别提高52.6%、60.5%、65.71%。高产栽培模式下吸收高峰明显后移,可见增加后期养分供应对于高产栽培具有重要意义。
The analysis of dry matter accumulation and nutrient accumulation of soybean under two cultivation modes in central Jilin Province was conducted to find out the characteristics of plant growth and the accumulation characteristics of NPK in different cultivation modes. The results showed that the yield of high-yielding cultivation was 2 268.0 kg · hm-2, which increased 16.3% than that of conventional cultivation and the dry matter accumulation was increased by 26.8% compared with the conventional cultivation. Compared with the conventional cultivation patterns, the uptake patterns of nitrogen, phosphorus and potassium in high-yielding cultivation increased obviously, which increased by 52.6%, 60.5% and 65.71% respectively compared with the conventional cultivation patterns. High-yield cultivation mode, the peak absorption significantly shifted back, we can see increased nutrient supply late for high-yield cultivation is of great significance.