旱地玉米双垄全膜覆盖“一膜用两年”免耕栽培模式研究

在推广应用旱地玉米双垄面集雨全膜覆盖沟播技术基础上,从减少投入、提高经济效益入手,进行了旱地玉米双垄全膜覆盖"一膜用两年"免耕栽培模式的试验研究.结果表明,该项技术玉米农艺性状明显优于常规覆膜栽培,玉米产量比常规栽培增产956.1 kg/hm2,增加16.31%;前期土壤含水量显著提高,玉米出苗率比双垄面集雨全膜覆盖沟播和常规覆膜栽培分别提高2.58%、14.5%;比双垄面集雨全膜覆盖沟播栽培和常规覆膜栽培分别减少投入1 350元/hm2、1 860元/hm2,纯收入分别增加703.9元/hm2、3 055.1元/hm2,经济效益显著.

Study on corn no-till planting mode of double ridge mulching "one film used for two years" on dryland

Based on the technology of double ridges whole film rainfall harvesting cultivation for corn on upland,the corn no-till planting mode of double ridge mulching "one film used for two year" on upland was studied.The results showed that compared with the conventional film mulching cultivation,this technology had better agronomical characters,increased corn yield by 956.1 kg/hm2(16.31%),and the soil water content of early period was increased.In comparison with the double ridges whole film rainfall harvesting cultivation and the conventional film mulching cultivation,this technology enhanced seeding rate by 2.58% and 14.5%,respectively;reduced investment by 1 350 yuan/hm2 and 1 860 yuan/hm2,respectively;increased net profit by 703.9 yuan/hm2 and 3 055.1 yuan/hm2,respectively.