菠菜(Spinacia oleracea)硝酸盐含量的控制和预测的研究  

STUDY ON CONTROL AND ESTIMATION OF NITRATE IN SPINACH(Spinacia oleracea) IN VEGETABLE GARDEN SYSTEM

作　　者：涂书新[1] 郭智芬[1] 潘勇[1] 林勇[1] 林若泰[1] 张宜春[1] 

机构地区：[1]湖北省农科院原子能研究所,武汉430064

出　　处：《应用与环境生物学报》1997年第2期125-131,共7页Chinese Journal of Applied and Environmental Biology

基　　金：农业部"八五"重点项目

摘　　要：建立了菜园系统中施氮量pA（N）、土壤水分w（H2O）［以占田间最大持水量的百分数表示］、土壤肥力w（RAHN）［以土壤还原碱解N（PAHN）水平表示］3因素影响菠菜植株NO3－N含量［w（NO3－N）］的三元二次数学模型．模型分析和盆栽、微区及大田验证试验结果表明：3因素对菠菜植株w（NO3－N）影响的顺序是：pA（N）＞w（RAHN）＞w（H2O）．既能使菠菜高产，又能使植株w（NO3－N）达到国颁限制标准的最佳措施组合是：pA（N）＝130．95～241．35kg·hm－2，土壤w（H2O）＝84％～88％及中等肥力土壤［w（RAHN）＝130～150mg·kg－1］．初步试验表明：模型还可用于对菠菜w（NO3－N）进行预测．A three--factor and second-degree polynomial mathematical model of nitrogen fertilization(pA (N) ),soil water content(w (H2O) ), soil fertility[w(RAHN)]vs. NO3-N content of spinach [w (NO3--N) was proposed. The results from model analysis,as well as pot, microplot and field experiments showed that the order of their effect on spinach w (NO3-N ); was p4 (N ) >w(RAHN) >w (H2O). The optimum combination of measures which could not only produce higher yield but also desirably control plant w (NO3-N) was 130. 95 -241. 35 kg. hm-2 of nitrogen fertilizer, 84 % - 88 % of field water capacity and middle soil fertility[soil reduced alkali-hydrolytic w(RAHN): 130-150 mg·kg-1]. Primary experiments showed that the model could be used to estimate spinach w (NO3-N).

关 键 词：菠菜 硝酸盐 预测 控制 

分 类 号：S636.101[农业科学—蔬菜学]