阜蒙县保护性耕作模式对比分析

Comparative Analysis of Conservation Tillage Mode in Fumeng County

2022年在阜蒙县县级保护性耕作基地开展玉米不同种植模式对比试验,其中包括秸秆全覆盖还田免耕二比空种植模式(免耕)、玉米秸秆全覆盖还田少耕二比空种植模式(少耕)、玉米秸秆粉碎还田翻耕技术模式和传统耕作模式。结果表明,免耕处理的玉米平均产量为860.13 kg/667 m^(2),较传统种植(项目区相邻地块)增产13.75%,且秸秆覆盖后土壤容重在0~20 cm间均有提高、土壤含水率显著提高,土壤地温下降但不影响适时播种。建议该地区的玉米种植应以秸秆全覆盖免耕种植为主。

In 2022,a comparative experiment of different corn planting modes were carried out in the county-level conservation tillage base in Fumeng County,including the full-cover straw returning to the field with no tillage and two-to-empty cultivation mode(no tillage),the full-cover corn straw returning to the field with less tillage and two-to-empty cultivation mode(less tillage),the corn straw crushing and returning to the field and the traditional tillage mode.The results showed that the average yield of corn under no-tillage treatment was 860.13 kg/667 m^(2),which was 13.75%higher than that under traditional planting(adjacent plots in the project area),and the soil bulk density was increased between 0 and 20 cm after straw mulching,the soil moisture content was significantly increased,and the soil temperature decreased without affecting the timely sowing.It is suggested that the corn planting in this area should be dominated by straw full cover and no-till planting.