【摘要】 对东北地区春玉米耐老化膜常年覆盖种植及宽窄行留高茬交替休闲种植方式的研究结果表明,与传统种植方式相比,耐老化膜常年覆盖种植方式使生育期提前2～3d;播种出苗阶段及苗期0～20cm土壤平均含水量比均匀垄传统种植方式高1.15个百分点和0.8个百分点;增温效果明显,播种出苗阶段≥10℃积温较均匀垄传统种植方式高34.1℃·d;产量显著提高,较均匀垄传统种植方式高15.56%,达极显著水平。更多还原

【Abstract】 The conservation tillage of spring maize in northeast of China on ageing-resistant film perennial mulch crop was researched, The results showed that the growth period of maize became earlier about 2 - 3 days, water content in soil(0 - 20 cm) increased by 1.15% and 0.8% compared with the traditional one in the earlier seedling stage. The soil temperature increased significantly. The yield also increased advantaged significantly. The soil accumulative temperature increased by 34.1℃·d and yield increased by 15.56% compared with the traditional one. This measure is a kind of conservation tillage technical mode and is valuable for extension and prospect.更多还原