Deep Straw Burial Accelerates Straw Decomposition and Improves Soil Water Repellency

The continuous input, slow decomposition, and retention of straw can impede tillage crop growth, the decomposition process in soil is affected by its composition method application. Experimental Station Jilin Agricultural University, Changchun City, Province. type was Argiudolls, experimental field area 30 m2, maize planted continuously for 12 years without returning to field. There were four treatments: (1) control (CK), 10 g placed on surface a nylon mesh bag, bag separated from polyethylene film contacting with soil; (2) mulching (CM), surface; (3) burying (CD), buried at depth 40 cm (4) (CE), depth. Fifteen micro-zones set up micro-zone 1 m2 each consisted treatments randomly grouped three replicates per treatment. on-site trial started 20 April 2021 ended 15 2022. Nylon samples collected days 0, 30, 90, 180, 270, 360. SOC, TN, component water droplet-soil contact angle determined. Our results showed that CE treatment increased organic carbon (SOC) total nitrogen (TN) content compared CM CD treatments. Compared CK, rates 13.3%, 30.8%, 22.3% CM, CD, treatments, respectively. Lignin 7.8%, 27.3%, 16.2%; cellulose 14.6%, 35.4%, 27.3%; hemicellulose 17.2%, 31.7% 23.7% treatment, droplets statistically significantly 91.5% when remained 5 s. rate decrease droplet time decreased 11.8%, penetration slower. Overall, promoted SWR which are important attributes enhance quality improve structural stability.