摘要
以旱地小麦晋麦 4 7号为试验材料 ,研究了不同时期水肥藕合方式对旱地小麦光合速率和产量的影响。结果表明 :不同时期水肥藕合对旱地小麦灌浆期光合性能和产量具有明显差异。其中拔节期水肥藕合方式 (补水 2 0m3+N2 0 P2 0 K16 )的净光合速率、蒸腾速率、气孔导度和胞间CO2 浓度分别比对照 (不补水 +N2 0 P2 0 K16 )高出 4 1 4 6 % ,31 79% ,10 5 2 8%和 97 8%。产量比对照高出 30 5 %。小麦增产影响因素通径分析为 :单位面积成穗数 >穗粒数 >千粒重。
The effect of irrigation combined with fertilization in different stage of wheat on photosynthetic characteristics and yield in dry land field were studied with breeds of wheat called jinmai 47.The results showed that the effect of photosynthetic characteristics and yield under different combination of irrigation and fertilization in different stage of wheat were significantly affected.The water and fertilizer combination at elongation of wheat was the best.Its yield were higher than the way without supplement water in whole growth term.According to the correlation analysis,spike number per area was highest in the three patterns,kernel number per spike was second and 1000 kernel weight was low.
出处
《华北农学报》
CSCD
北大核心
2002年第z1期61-65,共5页
Acta Agriculturae Boreali-Sinica
关键词
不同时期
旱地小麦
水肥藕合
光合特性
Different stage
Wheat in dry land field
Irrigation and fertilization
Photosynthetic characteristics
