论文部分内容阅读
谷子在我省干旱地区有广泛地分布,它具有很强的抗旱能力,是干旱地区的一种稳产、高产作物。会宁县近两年来由于气候反常,使谷子全生育期常年350毫米左右的降雨,下降到不足300毫米,特殊年份(如1982年)仅155毫米。尤其不同年份降雨时期的变化,对谷子的产量影响更大。本文就1973年至1982年九年内(1975年国试验受盐碱危害资料缺)谷子生育期间雨量、积温(≥10℃)、日照、蒸发等气象因素与产量关系的资料,浅析雨量等气象因素对谷子产量的影响。在此基础上进行了谷子主要生育阶段,不同旬期降雨量与产量的多元回归分析。试验原始数据取得的立地条件在甘肃省会宁县农科所川旱地,位于东径105°06′,北纬35°4′,海拔1720米,具有干旱地区的代表性。综合九年的气象资料,包括降雨、积温、日照、蒸发等因素对产量的影响。其中雨量与产量的关系最密切,雨量的分布呈一单峰曲线,产量跟随也呈一峰值更大的单峰曲线。而积
Millet is widely distributed in arid areas of our province. It has strong drought resistance and is a stable and high-yield crop in arid areas. Huining County in recent years due to climate anomalies, millet throughout the whole growing period of about 350 millimeters of rainfall fell to less than 300 mm, special years (such as 1982) only 155 mm. In particular, changes in rainfall during different years have a greater impact on the yield of millet. In this paper, based on the data of the relationship between the rainfall and accumulated temperature (≥10 ℃), sunshine, evaporation and other meteorological factors during the growth period of millet during the nine years from 1973 to 1982 (lack of saline-alkali hazard information in 1975) Effect of Factors on Millet Yield. Based on this, multiple regression analysis was conducted on the main growth stages of millet, rainfall and yield in different ten-year periods. The experimental site conditions were obtained from the dry farmland of Heilongjiang Province, Huining County, Gansu Province. It is located at 105 ° 06 ’east and 35 ° 4’ north latitude and 1720 meters above sea level. It is representative of arid areas. Integrated nine years of meteorological data, including rainfall, accumulated temperature, sunshine, evaporation and other factors on the yield. Among them, the relationship between rainfall and yield was the closest, the distribution of rainfall showed a single peak curve, and the output followed a peak with a larger peak curve. And plot