摘要
根据山西寿阳试验区年内降水时空分布不均 ,季节性干旱发生频繁 ,致使粮食产量低而不稳的现状 ,于 1998～ 1999年进行了春玉米地秸秆覆盖农田水分调控试验 ,以减少土壤表层水分蒸发、提高降水利用效率 ,促进试验区农业的稳定、持续发展。研究结果表明 ,秸秆覆盖具有明显的抑蒸保墒效应 ,有效地利用了有限的降水资源 ,土壤储水量明显增加 ,促进了农田水分的良性循环 ,有利于作物的生长和产量形成 ,因而水分效益显著 ,不同降水年份 ,每公顷玉米产量增加 582～ 2 2 35.1kg ,作物水分利用效率分别提高 0 .14～ 0 .50kg/ (mm·hm2 )。
In order to decrease evaporation rates and increase WUE, water regulating experiment was carried out by mulching with straw from 1998~1999 in Shou Yang area where the precipitation is insufficient and seasonal drought occures frequently. The results showed that the effects of anti evaporation and the storage capacity are very marked by malching with straw, and the storage capacity of field is increaed, and the good cycle of soil moisture is promoted. Maize production and the WUE increased by 585～2235.1 kg/hm 2 and 0.14 ~0.50kg/(mm·hm 2) respectively.
出处
《中国农业气象》
CSCD
2001年第1期15-18,共4页
Chinese Journal of Agrometeorology
基金
"九五"国家攻关课题!<晋东豫西旱地农业持续发展研究>的研究内容之一
