نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه مهندسی تولید و ژنتیک گیاهی، دانشکده کشاورزی و منابع طبیعی، دانشگاه محقق اردبیلی، اردبیل، ایران.
2 گروه مهندسی تولید و ژنتیک گیاهی، دانشکده کشاورزی و منابع طبیعی، دانشگاه محقق اردبیلی، اردبیل، ایران
3 مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان اردبیل (مغان)، اردبیل، ایران
4 گروه مرتع و آبخیزداری، دانشکده کشاورزی و منابع طبیعی، دانشگاه محقق اردبیلی، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
The present research was conducted in order to investigate the role of cover crops in improving soil health in soybean. The experiment was conducted as a factorial design in the form of a randomized complete block design with three replications during growth seasons of 2020-2021 and 2021-2022 in Agricultural and Natural Resources Research of Ardabil. The studied factors include the date of planting cover crops in two levels (at the same time and three weeks after soybean planting), their planting density in two levels (recommended and triple recommended) and the type of cover crop in 12 levels (including autumn barley, oats, autumn rye, autumn wheat, berseem clover, Persian clover, crismon clover, yellow sweet clover, red clover, annual alfalfa, bitter vetch and hairy vetch). two control treatments were considered in the form of pure soybean cultivation (without cover crop cultivation) along with spraying and without spraying against weeds next to each replication. The combined analysis of variance of the data showed that in addition to the main effect of the experimental treatments, the interaction effect between them on the studied traits was significant. The use of cover crops improved soil health in soybeans. The highest values of earthworm number and weight, basal respiration, microbial population, urease and alkaline phosphatase enzymes, phosphorus, nitrogen percentage, grain yield and the lowest soil carbon to nitrogen ratio were obtained in hairy vetch. Therefore, it is recommended to use cover crops, especially hairy vetch, to achieve sustainable agricultural goals and improve soil health in these areas.
کلیدواژهها [English]