Abstract:

In view of the environmental pollution caused by the common mulch film used in peanut planting, we compared the effects of biodegradable films (BD), common plastic films (PE) and non-cover films (CK) on the nutrient absorption of peanuts, soil nutrient and yield of peanuts at different growth stages through a field test. The results showed that: the yield of PE and BD in the harvesting period was 7908.09 and 6868.92 kg/hm ², respectively, significantly increased by 25.85% and 21.78% compared with that of CK; the content of alkali nitrogen and available phosphorus in soil treated by PE and BD showed a trend of "first decrease and then increase", while the available potassium content showed a decline trend, which was the maximum at the seedling stage, and then gradually decreased; under different films, the nutrient uptake of the aerial parts of peanut plants increased gradually; the cumulative absorption of nitrogen, phosphorus and potassium at peanut growth stages showed PE>BD>CK. The experiment was carried out from the aspects of soil nutrient and nutrient absorption and utilization of peanut, and could provide a basis for the application of biodegradable film in peanut production.

Key words: peanut, mulch film, biodegradable film, nutrient uptake, yield