安徽农业科学2012，Vol.40Issue(3)：1379-1381,1399,4.
过量浸水对基质块N、P、K流失及秧苗生长的影响
Impacts of Substrates Plots of N, P and K and Seedling Growth by Excessive Soaking
摘要
Abstract
[Objective] The aim was to study on impacts of substrate plots of N, P, and K and seedling growth by excessive soaking. [ Method] Substrate was designed to add additional 1/2 water after saturation and expansion. Disposable excessive soaking and regression relation of nutrition infusion of substrate plots were studied on by design of 13 time gradient. Plant nutrition absorption and growth effects after substrate plots immersed by water were investigated by growing tomato. [ Result] Concentration and time of the three nutrition immersed in water had the regression equation of each, as follows; N = -2E-05t2 + 0.016 1t + 2.0553, P = 0. 002 2t + 2.248 5 and K = 0. 004 7t + 0.875 8. With nutrition loss of the three, however, loss amount was almost same with variance analysis of regression equation, which may be resulted from its volatilization. Regression equations of P and K were: P = 0. 125 7t-0.117, and K = 0. 022 5t0.1514, which led to adverse impact on plant absorption of N and K above ground, whose equations were N = 20. 64e -4E -041, and K = E - 06t2 - 0. 011 3t + 29. 055. Meanwhile, under the condition, sound seedling index was not impacted a lot by excessive immersion. [ Conclusion ] This study has provided theoretical reference for guidance of of substrate plot soaking method, cultivation and regulation, and breeding, as well as agricultural production.关键词
基质块/吸水饱和膨胀/过量水/回归方程Key words
Substrate plot/ Saturation and expansion for absorption/ Excessive water/ Regression equation分类
农业科技引用本文复制引用
王甲辰,左强,谷佳林,肖强,邹国元,张琳,王美菊..过量浸水对基质块N、P、K流失及秧苗生长的影响[J].安徽农业科学,2012,40(3):1379-1381,1399,4.基金项目
科技部科技人员服务企业行动项目(2009GJA∞026) （2009GJA∞026）
北京市农业局科技项目(2010020101) （2010020101）
北京市农林科学院科技项目(2010A016) （2010A016）
北京市农业局科技项目(1011050465100002). （1011050465100002）
