玉米施用有机肥替代化肥优化组合试验研究

Experimental Study on Optimizationof Corn Organic Fertilizer Replacing Chemical Fertilizer

有机肥替代化肥优化组合试验结果表明:减少化肥施用量20%+施有机肥150 kg·667 m^(-2)组合(处理③),玉米收获后土壤有机质含量增加3.4 g·kg^(-1),增加37.8%;较常规施肥土壤有机质含量增加5.1 g·kg^(-1),增加70.2%;收获秸秆增加110.6 kg·667 m^(-2),增加12.5%;玉米单产增加70.5 kg·667 m^(-2),增加8.9%;物质投入增加56元·667 m^(-2),收益增加126.9元·667 m^(-2),纯收益增加70.9元·667 m^(-2),增加11.3%,投产比1︰1.8。

The experimental results of the optimization of organic fertilizer replacing the chemical fertilizer showed that the soil organic matter content could be increased by 3.4 g·kg^(-1),about 37.8%,by reducing 20%chemical fertilizer and applying 150 kg·667 m^(-2) organic fertilizer(treatment③)after the harvest of corns.Compared with the soil enriched with conventional fertilizer,the organic content increased by 5.1 g·kg^(-1),an increase of 70.2%.The harvested straw increased by 110.6 kg·667 m^(-2),an increase of 12.5%.The corn yield per unit yield increased by 70.5 kg·667 m^(-2),about 8.9%.The costs increased by 56 yuan·667 m^(-2),and the income increased by 126.9 yuan·667 m^(-2).The net income increased by 70.9 yuan·667 m^(-2),an increase of 11.3%.The input-output ratio was 1︰1.8.