海阳市春播期间气候条件分析

The Haiyang Climatic Conditions Analysis in Spring Sowing Period

摘要: 海阳市是农业大市，主要春播作物有花生、春玉米、地瓜、芋头等，常年春播作物播种面积大约30,000 hm2。为合理利用气候资源，趋利避害，本文根据本站最近55a气象资料，对春播期间的气候条件进行了回归分析和Mann-Kendall检验分析，结果表明：1)海阳市春播期间平均气温年际序列变化呈增加趋势，气候倾向率为0.28℃/10a，春播适播期逐渐前移；2)春播期降水量年际序列变化呈减少趋势，但气候倾向率很小。降水偏少、春旱发生的机率大是影响春播的主要原因。

Abstract: Haiyang City is an agricultural city. The main spring crops are peanuts, corn, sweet potatoes, taro and so on. Perennial sown area of spring crops is about 30,000 hm2. In order to utilize the climate resources rationally, while avoiding the disadvantages, this paper carried out the regression analysis and Mann-Kendall test analysis on the climate conditions during spring sowing period, according to the recent 55a meteorological data. The results show that: 1) The average yearly temperature sequence changes in Haiyang City during spring sowing period are tending to increase. The climate tendency rate is 0.28˚C/10a, the spring sowing period gradually comes earlier. 2) The average yearly precipitation sequence changes are tending to decrease but the climate tendency rate is very low. Less precipitation and the high chance of spring drought are the main factors influencing the spring sowing.