摘要
2008年在会宁县四方吴乡三房吴村进行了全膜双垄沟播玉米需水动态测定。结果表明:在半干旱地区全膜双垄沟播玉米生育期需水264 mm左右,造成干旱的原因不是降水总量不足,而是降水与玉米生长发育期需水不吻合,尤其是玉米进入大喇叭口期,需水进入高峰期,此期需降水补充,如无有效降水,应采用集雨补灌等主动抗旱措施。
In 2008, it was study that the need water dynamic determination of Ditch Sowing in Double Ridge Mulched with Plastic Films in Huining County. The results showed that the water demand in corn growing period about 264 mm. The reason was known that not lack the total of precipitation, but precipitation and growth need water does not correspond, especially the corn in the large bell period and the water demand in the peak water which needed precipitation supplement, as no effective rainfall. So, rainwater harvesting should be adopted, such as supplementary irrigation and drought measures in the initiative.
出处
《甘肃农业科技》
2009年第6期18-20,共3页
Gansu Agricultural Science and Technology
关键词
半干旱地区
玉米
水分特征
Semi arid areas
Corn
Water characteristic
