提高春玉米主产区玉米单产的技术途径

针对制约春玉米单产进一步提高的主要因素,研究了发展耐密型玉米单交种,推行"夏季深松、春季不翻动土壤直接播种"的保护性耕作技术,坚持基肥、种肥与追肥相结合施肥原则,增加钾肥用量,将追肥期后移,增加追肥深度,改善与提高耕地质量等提高春玉米主产区玉米单产的主要技术途径。

Discussion on Technique Way to Increase Unit Area Yield in the Main Production Area of Spring Maize

Aiming at restricting the main factors to increasing the unit area yield of spring maize further, through using compact maize, adopting conservation cultivation technique of soil deep loosening in summer and planting in the primary ridge in spring, basal fertilizer, seed fertilizer and top-dressing fertilizer applied combined, increasing potash fertilizer application amounts, top-dressing fertilizer was applied at late stage and fertilizer was deeply applied, we found that improving and increasing cultivated land quality are the main way to increase unit area maize yield in the main production area.