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黑龙港盐碱地区是我省棉花产区之一。由于受春季盐碱影响,棉花播种和保苗比较困难。本文从农业气候角度进行分析与探讨,以供生产上参考。一、盐碱地棉花播种和保苗受气象影响较大。盐碱地栽培棉花达到一播全苗和保全苗是获得好收成的基础,表土盐碱的多少是影响棉花一播全苗和保全苗的主要因素。黑龙港流域盐碱性棉田的播种期和苗期正是土壤表层积累盐碱的盛期。春季潜水位在安全水位(2米)线以上,再加之春风多,太阳辐射达到全年最高值(14.34大卡 cm~25月),土壤增温快,土中的水分活跃,空气干燥,蒸发强烈,毛细管水上升很快,盐碱随着毛
Heilongjiang Salt and alkali area is one of the province’s cotton producing areas. Affected by the spring salinity, cotton sowing and seedling more difficult. This paper analyzes and discusses from the perspective of agricultural climate for production reference. First, the saline-alkali cotton sowing and seedling weather by the greater impact. Saline-alkali cotton cultivation to achieve a full seedlings and seedlings to protect the harvest is the basis for good harvest, the number of topsoil is the impact of cotton-seedlings and seedlings to protect the main factors. The sowing period and seedling stage of salinized cotton fields in Heilongjiang River Basin are the peak periods for the accumulation of saline and alkali on the soil surface. Spring diving position above the safe water level (2 meters) line, together with the spring breeze, the solar radiation reached the highest value of the year (14.34 kcal cm ~ 25 months), soil warming fast, active soil moisture, air drying, evaporation Intense, capillary water rises rapidly with saline as hair