关键词: 花生, 花生, 长期连作, 生长发育, 产量, 内在品质

Abstract: The paper aims to study the climate change features of precipitation during the critical period of spring ploughing spring sowing and pruduction countermeasure, the authors used the precipitation records during late March to mid-April from 1952 to 2015 in Xifeng meteorological station and the observation data during the growth period of corn from 1990 to 2015 in Xifeng agrometeorological experiment station, adopted the climate tendency coefficient and correlation methods to analyze the yearly change characteristics of precipitation during late March to mid-April which was the appropriate critical period of soil water utilization of spring ploughing spring sowing in dry area. The results showed that: the probability of less total precipitation during late March to mid-April reached up to 54.7%; the probability of less total precipitation in early April was greater than that in late March and mid April. For achieving maximum scientific exploitation and utilization of soil thawing accumulation water in spring and precipitation climate resources before late March, we should complete to apply base fertilizer and plastic film covering in late March, rather than complete the compound spring sowing machine with applying base fertilizer, plastic film covering and sowing corns by one time during 18 to 25, April which was the stage fitting in fall crops’ sowing time in dry area, to avoide the loss of soil water evaporation in the early stage of sowing.