玉米膜下滴灌土层增温效果的研究

根据2008年在黑龙江省大庆市杜蒙县进行的玉米覆膜试验,对滴灌条件下大垄双行覆膜与不覆膜种植方式下玉米苗期、拔节期进行了不同土层地温的连续测定。结果表明,大垄双行覆膜条件下,苗期地温增加了0.75～1.25℃,拔节期地温增加了1.63～2.35℃。到了生长后期,由于植株的遮挡,覆膜的增温作用逐渐减弱,基本可以忽略覆膜的增温作用。

Study on warming effect of tectorial membrane of drip irrigation for corn

According to the 2008 corn tectorical membrane experiment which engaged in Dumeng Country, Daqing City, Heilongjiang Province, the temperature of different soil layers had been taken on the continuous determination, in corn seedling stage and jointing stage, under the drip irrigation condition by the planting method of big ridge tectorial membrane or uncovered planters. The results showed that under the condition of tectorial membrane for the big ridge of double lines, the ground temperature increased 0.75～1.25 ℃, and the ground temperature increased 1.63～2.35 ℃ under the jointing stage. At the later period of growth, the warming function had been weakened gradually, which could be neglected basically because of the shelter of the plants.