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对黑龙港地区沧州市夏播早熟玉米区气候资源的研究表明,该区夏播早熟玉米穗粒数和粒重决定期中温度是对产量影响最大的气候因子,降雨量次之,而粒重决定期综合气候生态作用相对更大,所引起的粒重变化是穗粒数决定期综合气象作用的2倍。玉米籽粒决定期日均气温、日照时数、降雨量与穗粒数分别为正对数、正指数及负幂函数曲线关系,玉米籽粒灌浆期间粒重与日均气温呈负线性关系,与气温日较差呈正线性关系,与降雨量呈二次曲线关系。该区种植早熟玉米品种粒数决定期一般年份雨水偏多,粒重决定期则多数年份降雨不足,灌浆期热量资源过盛。
The study on climatic resources of summer sowing early maturity corn in Cangzhou City in Heilongjiang Province showed that the temperature of early sowing corn ear number and grain weight in this area was the climatic factor with the greatest impact on yield, followed by the grain weight The comprehensive climate and ecological role of the relatively larger, caused by changes in grain weight is the grain number of decision-making period of comprehensive meteorological effects of 2 times. The average daily temperature, sunshine hours, rainfall and grains per spike were positive logarithm, positive exponent and negative power function curve respectively. There was a negative linear relationship between grain weight and average daily temperature during maize grain filling, Poor positive linear relationship, and rainfall showed a quadratic curve. In this area, the number of early maturing corn grains is more than that in normal years, while in the decisive period of grain weight, there is insufficient rainfall in most years and the caloric resources in the filling stage are too abundant.