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受低温危害大的旱田作物,首推棉花与花生;其次是高粱、甘薯;再次是玉米,大豆、谷子、向日葵在辽宁受害极轻。据调查,建国以来,我省4个低温冷害年比正常年高粱平均减产13石％,玉米平均减产8.6％。旱田作物抗御低温冷害应采取的措施,播种出苗之前有:(1)栽培面积大的主栽作物用两种不同生育期的品种相互搭配,以增强对气候条件变动的适应性;(2)运期播种,种上垄,争取禾苗早生快发;(3)增施有机肥和磷肥,注重氮、磷配合,促进作物生育均衡,促进早熟;(4)
Affected by the low temperature of the field crops, devaluation of cotton and peanut; followed by sorghum, sweet potato; again corn, soybeans, millet, sunflower in Liaoning Province suffered extremely light. According to the survey, since the founding of the People’s Republic of China, the average annual rate of chilling injury in our province has been 13% less than that of normal year and the average yield of maize has been reduced by 8.6%. Measures to be taken to prevent low temperature chilling in dryland crops Before planting seedlings, there are: (1) main cultivated area with two varieties of different growth stages with each other to enhance the adaptability to climate change; (2) transport (3) increase the application of organic fertilizer and phosphate fertilizer, pay attention to the coordination of nitrogen and phosphorus, and promote the balance of crop growth and promote early maturity; (4)