摘要
研究了不同品种、不同播期、不同密度和不同施氮条件下烯效唑干拌种对小麦的产量效应。结果表明 ,烯效唑干拌种提高了不同品种、播期、密度和施氮量下小麦的产量 ,以 2 0mg kg的效果最好 ,烯效唑的平均增产效应在品种间差异不显著 ,早、迟播时增产效应更大 ,适宜浓度的烯效唑 (10～ 2 0mg kg)与较高密度的基本苗 (180× 10 4 ～ 2 70× 10 4 hm2 )或较高的施氮量 (180～ 2 70kg hm2 )配合更有利于获得高产。烯效唑处理使有效穗、千粒重和穗粒数得到提高 。
The effects of uniconazole(S-3307) waterless-dressing seed on yield of wheat under different cultivars,sowing dates, planting densities and nitrogen application levels were studied from 1996 to 2001. The results showed that S-3307 20 mg per kg seed was the best treatment to increase yield. The effect of S-3307 on yield was similar between two cultivars, but the effect of increasing yield under early sowing date was higher. The preferable combinations was S-3307 10—20 mg per kg seed together with planting density of 180×10~4—270×10~4 per ha, or together with nitrogen application level of 180—270 kg/ha. S-3307 treatment increased valid ears per unit area, grains per ear and 1 000-grain weight, and could reduce the negative effect of higher planting density and lower nitrogen application level on yield components of wheat.
出处
《作物学报》
CAS
CSCD
北大核心
2004年第5期502-506,共5页
Acta Agronomica Sinica
基金
四川省学术技术带头人培养基金
