Effect Of Silvopastoral System On The Improvement Of Coastal Saline Soil In The Yellow River Delta

The Yellow River Delta is a typical coastal saline soil distribution werea in China.The lo cal soil ecological environment is fragile and prone to salinization.As an important land reser ve resource in China,it's significant to make full use of coastal saline soil is of great denotatio n to alleviate the shortage of land resources and improve the ecological environment.This pap er selected three planting systems: the silvopastoral system,alfalfa monocropping system and ash monocropping system as planting systems in the land use Shandong Wudi Field Scientific Observation Base of the Ministry of Land and Land.The efficient utilization of saline soil,ec ological construction and sustainable management in the Yellow River Delta provided theoreti cal basis.The main research results were as follows:(1)The effects of the silvopastoral system(FM),pure grass system(MS)and pure forest system(FS)on soil moisture content were different: the ability of evaporation inhibition exhib ited an order of the silvopastoral system(FM)> pure grass system(MS)> pure forest system(F S).(2)The silvopastoral system(FM),pure grass system(MS)and pure forest system(FS)all significantly reduced the total amount of water-soluble salts in the soil layer at a depth of 0to 40 cm,but the degrees of reduction were different: the ability of amount of desalination ex hibited an order of silvopastoral system(FM)> pure grass system(MS)&pure forest system(F S).(3)The silvopastoral system(FM),pure grass system(MS)and pure forest system(FS)all significantly increased the soil organic matter content in the soil layer at a depth of 0 to 40 cm,but the degrees of increased varied: the silvopastoral system(FM)and pure grass system(MS)significantly increased the organic matter content of shallow soils,and the pure forest sy stem(FS)significantly increased the soil organic matter content of 0-40 cm deep soil layers.(4)The silvopastoral system(FM),pure grass system(MS),and pure forest system(FS)all significantly increased the available nutrient content of the soil in the soil layer at a depth o f 0 to 40 cm,but the degrees of increase varied: The total nitrogen content of the deep soil in t he silvopastoral system(FM)and pure grass system(MS)was significantly higher than that of the pure forest system(FS);the available phosphorus content in the surface soil in the silvopa storal system(FM)was significantly higher than that of pure grass(MS)and pure forest system(FS),the effective phosphorus content of middle soil was significantly higher than that of p ure forest system(FS),the effective phosphorus content of deep soil was significantly higher t han that of pure grass system(MS);The content of available potassium in the shallow soil of t he silvopastoral system(FM)was significantly higher than that of the pure grass(MS)and the pure forest system(FS),and the content of available potassium in the deep soil was significan tly higher than that of the pure forest system(FS).