| 不同母质紫色土对水稻供磷能力的研究 |
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| 引用本文： | 吴德意.不同母质紫色土对水稻供磷能力的研究[J].西南农业大学学报,1989,11(2):159-163. |
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| 作者姓名： | 吴德意 |
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| 作者单位： | 西南农业大学土化系 |
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| 摘 要： | 1986年在西南农大盆栽场用不同母质紫色土进行水稻盆栽结果表明:在四川盆地紫色土中,沙溪庙组发育的中性紫色土和飞仙关组发育的紫色土供磷能力最强,夹关组、自流井组发育的紫色土以及沙溪庙组发育的石灰性紫色土供磷中等,蓬莱镇组发育的酸性紫色土和遂宁组发育的紫色土供磷最差。紫色土上有效磷对水稻的临界指标为6.1ppm。
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| 关 键 词： | 紫色土 磷 母质 临界指数 水稻 |
STUDY ON PHOSPHORUS SUPPLYING ABILLTY OF PURPLE SOILS DERIVED FROM DIFFERENT PARENT MATERIALS |
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| Wu Deyi.STUDY ON PHOSPHORUS SUPPLYING ABILLTY OF PURPLE SOILS DERIVED FROM DIFFERENT PARENT MATERIALS[J].Journal of Southwest Agricultural University,1989,11(2):159-163. |
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| Authors: | Wu Deyi |
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| Institution: | Wu Deyi Department of Soil Science and Agrochemistry,Southwest Agricultural University |
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| Abstract: | Phosphorus supplying ability (PSA) is high in purple soils derived from T_1f rocks, middle from K_2j and J_2zh and low from J_2Sn. Neutral and calcareous purple soil derived from J_2S have high and middle PSA respectively. However, PSA of acid purple soil derived from J_3P is very low. The critical value of available P for rice grown in purple soil is 6.1 ppm. |
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| Keywords: | purple soil parent material critical exponent paddy /accommodation Phosphorus coefficients |
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