摘要
根据2004～2006连续3 a试验资料,对水稻无水层栽培的腾发量、产量和水利用效率进行了分析探讨,试验表明:在无水层栽培条件下,蒸腾速率虽低于对照,但其数值都非常接近;叶面蒸腾值相近,而棵间蒸发值低;无水层灌溉的平均腾发强度和腾发量比对照低,产量高于对照。说明无水层栽培的土壤水分调节模式优于对照,符合水稻生长发育需要,有利于高产、高效。
The experiment was conducted to study the transpiration amount, yield and water use efficiency in rice under non-water layer cultivation from 2004 to 2006. The results showed that although the transpiration rate was lower than control, the values were very close. Leaf transpiration value was close, but evaporation amount was low among plants. Compared with control, the mean evapotranspiration intensity and evapotranspiration amount were lower, but the yields were higher under non-water layer cultivation, which indicated that the water-adjusting model under non-water layer cultivation was better than the control, was accorded with the requirement of rice growth and development, and was ben- eficial to realize high yield and high efficiency.
出处
《北方水稻》
CAS
2009年第2期20-21,27,共3页
North Rice
关键词
水稻
蒸腾
腾发量
节水
Rice
Transpiration
Evapotranspiration amount
Water-saving
