Effects of Mulching on Soil Physical and Chemical Properties in Walnut Orchard
In order to study the effects of ground mulching in walnut orchard,the effects of mulching with different materials (dairy manure,wood chips,alfalfa) on soil physical and chemical properties were studied from 2011 to 2012,the results showed that:In the try season,the soil water contents in the 0-20 cm soil layer of mulching dairy manure,wood chips,alfalfa and non-mulching were 16.99％,15.59％,14.62％ and 14.05％; soil water contents in the 20-40 cm soil layer were 13.62％,12.68％,11.57％ and 11.07％; soil water contents in the 40-60 cm soil layer had no significant differences between mulching treatments and non-mulching treatment.After two years mulching dairy manure,soil bulk densities in the 0-20 cm,20-40 cm,40-60 cm soil layer were 1.24 g/cm3,1.32 g/cm3,1.43 g/cm3,which decreased by 9.9％,7.7％,5.3 ％ respectively compared with before mulching,and they were the largest decline in all treatments.The capillary porosities were 36.67％,34.19％,32.80％,which were the largest in all treatments.And after two years mulching dairy manure,the soil organic matter content in the 0-20 cm soil layer was 13.332g/kg,the total nitrogen content was 1.119 g/kg,the total phosphorus content was 1.077 g/kg and the total potassium content was 8.624 g/kg.Mulching dairy manure treatment in other indexes were significantly higher than that of other treatments and non-mulching except the soil total nitrogen content was significant lower than that of mulching alfalfa.
walnutmulchingsoil physical and chemical properties
国家科技期刊平台
NSTL
万方数据
维普
