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| 影响磷矿粉在淹水水稻土中溶解和有效性因素的研究 | |
| 引用本文： | 郭海超,王光火,吴小平.影响磷矿粉在淹水水稻土中溶解和有效性因素的研究[J].中国农学通报,2011,27(12):134-139. |
| 作者姓名： | 郭海超 王光火 吴小平 |
| 作者单位： | 1. 中国热带农业科学院橡胶研究所,海南儋州571737;浙江大学环境与资源学院资源科学系,杭州310029 2. 浙江大学环境与资源学院资源科学系,杭州,310029 3. 中国热带农业科学院橡胶研究所,海南儋州,571737 |
| 基金项目： | This research wasfinancially supported by International Fertilizer Industry Association，the Potash and Phosphate Institute/Potash and Phosphate Institute of Canada，the Fundamental Research Funds for Rubber Research Institute |
| 摘 要： | 通过对在采自浙江省金华市的12种不同性质的水稻土添加江西省吴村磷矿粉（WPR）进行淹水培养试验，研究淹水条件下影响磷矿粉溶解和有效性的土壤因素。结果表明，磷矿粉在土壤中的溶解量与土壤pH（KCl）、交换性钙离子含量以及土壤粉粒含量呈极显著或显著的负相关，而与土壤粘粒含量呈显著的正相关。经逐步回归发现，土壤pH（KCl）是影响磷矿粉溶解的第一因素，土壤pH（KCl）和土壤磷吸附常数K共同解释了78%的磷矿粉溶解。加入磷矿粉后土壤有效磷的增加量（Resin-P）与土壤的Olsen-P含量呈极显著的正相关。施用磷矿粉后土壤有效磷增加量占溶解量的百分比与土壤Olsen-P含量呈极显著性正相关，而与土壤粘粒含量、最大吸磷量呈显著负相关。 |
| 关 键 词： | 几丁质酶 几丁质酶 诱变 发酵条件 枯草芽孢杆菌 |
| 收稿时间： | 2010/12/28 0:00:00 |
| 修稿时间： | 2011/1/18 0:00:00 |
Factors Affecting the Dissolution and Availability of Phosphate Rock in Flooded Paddy Soils |
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| Guo Haichao,Wang Guanghuo,Wu Xiaoping.Factors Affecting the Dissolution and Availability of Phosphate Rock in Flooded Paddy Soils[J].Chinese Agricultural Science Bulletin,2011,27(12):134-139. | |
| Authors: | Guo Haichao Wang Guanghuo Wu Xiaoping |
| Institution: | Guo Haichao 1,2,Wang Guanghuo 2,Wu Xiaoping 1(1 Rubber Research Institute,Chinese Academy of Tropical Agricultural Sciences,Danzhou Hainan 571737,2 Department of Resources Science,College of Environmental and Resources Sciences,Zhejiang University,Hangzhou 310029) |
| Abstract: | Two P fertilizer of varying solubility, namely, Wucun phosphate rock (WPR), monocalcium phosphate (MCP), were incubated with twelve flooded paddy soils to quantify factors affecting the dissolution and availability of PR, the twelve paddy soils were sampled from Jinhua, Zhejiang province. Results showed the amounts of WPR dissolution (△NaOH-P) was negatively correlated with soil pH (P＜0.01), exchangeable calcium and soil silt content (P＜0.05), positively correlated with soil clay content (P＜0.05). Stepwise multiple regression indicated that KC1 extractable pH was the soil property that most affected PR dissolution, soil pH and adsorption parameter K together accounted for 78% of the variation in PR dissolution. The increase of soil available P (△Resin-P) after WPR application was positively correlated with soil Olsen-P (P＜0.01).Percentage of △Resin-P by △NaOH-P after WPR application was positively correlated with soil Olsen-P (P＜0.01), negatively correlated with soil clay content and Xm (P＜0.01). Stepwise multiple regression indicated that soil Olsen-P and Xm were the soil properties that mainly affected percentage of △Resin-P by △NaOH-P after WPR application. |
| Keywords: | Available P dissolution paddy soil phosphate rock |
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