农田林网对小麦晚霜冻害防护作用的研究

STUDIES ON THE PREVENTIVE EFFECT OF FOREST BELT ON FARMLAND TO LATE FROST FOR WHEAT

通过凹底镇晚霜对小麦大面积霜冻危害的调查 ,揭示了农田中设置林带对减轻霜冻的作用 ,在窄林带树高 7倍、宽林带树高 15倍范围内 ,可使小麦少减产 2 7 34%和 5 7 82 %。调查结果还表明 ,防霜效果与林带的走向、迎霜和背霜面、树冠层大小等有关。

Investigations of lata frost on wheat in Aodi town showed that forest belt on farmland could effectively relese wheat late frost.In the range betwen seven time of tree height to 15 time of tree height,wheat yield could less decrese by 27 34% and 57 82%.The investigation further showed that frost prevention effect was related to forest belt direction,wind direction and tree crown size.