| Binhai saline-alkali land has always been one of the environmental problems.In recent years,the improvement technology ofbinhai saline-alkali is more and more stronger.The research of ditch planting and soil fertility level of the combination in the influence of the characteristics of saline-alkali soil ecological succession process is few.For high binhai saline-alkali soil salt content?low fertility and crop planting and other issues,we adopt the five processing experiment including contrast,ridging,ridging +compost,ridging+ green manure,ridging +compost + green manure.To study ridging and soil fertility level in the influence of soil water content,salt content,the microflora and crop yield in binhai saline-alkali.Principal conclusions of this paper are as follows:In the ditch,improve the combination of various ridging and soil fertility in soil section average water content of top layer is significantly higher than CK,embodied in: DL > LF > DF > QL > CK(CK is contrast/QL is ridging/DF is ridging +compost/LF is ridging+ green manure/DL is ridging +compost + green manure),and clear difference between the groups.Ridge slopes and ridge is in a state of bare.In 0-20 cm depth in soil,improve the combination of various ridging and soil fertility of soil section average water content significantly below the culture,embodied in: CK > LF > DF > QL > DL,and clear difference between the groups,DL at least.In the ditch 0-20 cm soil layer,ridging and soil fertility technology can keep soil ditch water content in the appropriate level.In the ditch 20-40 cm soil layer,ridging + compost treatment will be a very good way to harden inorganic mass to convert into the corresponding organic matter in soil,thus affecting the soil moisture content.In ridge slopes and ridge taichung,because moisture evaporation is strongly,0-20 cm of soilmoisture content must be less than the moisture content of corrugation.Ridge units in a dry condition for a long time,time dynamic changes of water content of ridge is affected by rainfall and irrigation.There is no obvious difference among QL?DF?LF?DL.In the ditch,ridging by combining and soil fertility of soil salt have very good effect on reducing salt,salt content,embodied in: CK > DF > QL > LF > DL.The ridging + compost + green manure composting achieve the best effect of salt.In ridge and the ridge in the slope,the processing salinity embodied in: DL > DF > LF > QL > CK.And it can be seen that ridge slope and ridge soil salinity changes is unstable,activities more frequently.Soil moisture content and salinity is in a counter movement trend,soil salt content was increased with the increase of soil water content decreases,and decreased with soil water content increase.Ridging has significant effects on bacteria,actinomyces,has no significant effects on fungi;Compost effect on bacteria,fungi,actinomycetes significantly;The effect of green manure than ridge,composting is relatively weak.Contrasting the culture and ridging,ridging can significantly increase the production of wheat and corn.Applying composting on yield and ridging mode,no significant role in promoting.Binhai saline-alkali land,improvement,ditch,soil fertility level,water and salt movement,soil microorganisms. |
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