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The Condition Of Organic Phosphorus And Influence Factor Research In The Vegetable Plot Soil

Posted on:2006-02-26Degree:MasterType:Thesis
Country:ChinaCandidate:N MengFull Text:PDF
GTID:2133360155952222Subject:Plant Nutrition
Abstract/Summary:PDF Full Text Request
This article blind massive employments phosphate fertilizer which exists in view of our vegetables production, it causes the fertilizer resources massive wastes, the soil phosphorus element massive accumulations realistic condition, uses the pot experiment, the micro area experiment, the fertilizer localization experiment, to carry out experiments in which reasonably matching the phosphate fertilizer and organic fertilizer making full use of existing phosphorus element resources and improving in the soil the potential phosphorus element production are studied in order to save the chemical fertilizer, enhance the output and provides the scientific basis to the continuable development in agriculture. Result is as follows:The area experiment and the micro area experiment show that in the soil entire phosphorus content increases along with the amount of phosphorus that employed increase, compared with the dispose in which no phosphorus is employed the differences are remarkable the higher the amount of employed phosphorus the higher the soil Olsen-P content Compared with the dispose in which no phosphorus is employed the differences are remarkable among the dispose in which phosphorus is employed in the soil organic phosphorus content tends to increase at first and then decrease with the amount of the employed phosphorus increases.The excessively high phosphate fertilizer amount used has suppressed in the soil organic phosphorus content. In same executes under the same phosphorus condition, the soil organic phosphorus content increase along with the increasely employed organic phosphorus.Compared with the check experiment the difference to achieve the difference heteropolar remarkable level.The alkalinity phosphatase occupies the dominant position in the lime soil, the acid phosphatase is in the middle, neutral phosphatase activeness is the lowest. Under the same phosphorus level, along with is organic the increase which fat executes inputs, the acid, the alkali, center phosphatase activeness all has the increase, under the same organic fat level, the soil acid, alkalinity phosphatase activeness but reduces along with executing phosphate fertilizer, the neutral phosphatase activeness not fixed change, along with rape's growth, in soil acid phosphatase activeness presents the tendency which reduces, in the soil alkali, neutral phosphatase activeness presents the increase the tendency. Executes organically...
Keywords/Search Tags:Soil organic phosphorus, Soil phosphatase (acidity, alkalinity, neutrality), Phosphate fertilizer, Organic fertilizer
PDF Full Text Request
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