论文部分内容阅读
去冬以来,我省降水量偏少,出现了大面积的冬旱,对小麦、油菜的生长造成了极为不利的影响。我省去年出现了历史上少有的秋旱,土壤失墒严重,全省大部分地区的小麦没有种在适宜播期。进入冬季后,除陕北、陕南10个县市降了另星小雨雪外,其余县、市都发生严重冬旱,直至春节前仅有少数县市降了不足10毫米的雨雪,旱象有所发展。据关中、渭北六个旱情测报点测定,旱地100厘米土壤含水率为9～12％,水地100厘米土壤含水率为14～16％,远远不能满足作物需水要求。截止元月底统计,关中、陕南受旱面积达1000多万亩。
Since the winter, the rainfall in our province is less than normal, with a large area of winter drought, which has a very adverse impact on the growth of wheat and rapeseed. Last year, there was a rare autumn drought in our province. The soil had a serious loss of moisture. The wheat in most parts of the province was not planted for proper sowing. Into the winter, in addition to northern Shaanxi, southern counties in 10 counties dropped another light snow, the remaining counties, cities have suffered severe drought, until the Spring Festival only a few counties dropped less than 10 mm of rain and snow, Drought has developed. According to Guanzhong and Weibei survey data of six drought conditions, the soil moisture content of 100 cm of dry land is 9-12%, and the water content of 100 cm soil water is 14-16%, which is far from meeting the requirements of crop water requirements. As of the end of January statistics, Guanzhong, southern Shaanxi drought area of more than 1000 mu.