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土壤基础供氮量
相关语句
  basic amounts of soil nitrogen supply
     Compared with conventional Indica and Japonica,the basic amounts of soil nitrogen supply of hybrid Indica and Japonica rice increased by 19.5% and 32.5%.
     杂交籼稻比常规籼稻高19.5%,杂交粳稻比常规粳稻高32.5%。 ②土壤基础供氮量在植株器官中的分配比例以叶、茎鞘的变异幅度较大,而穗的变异幅度则较小;
短句来源
  相似匹配句对
     Applying N fertilizer into a soil with low N-supplying capacity, nitrogen in plants was increased at late growth stage.
     在较低的土壤上则相反。
短句来源
     Study on Soil Nitrogen Supplying Indexes
     土壤能力指标研究
短句来源
     paddy soil nitrogen supplyingcapacities and the total nitrogen content of rice plant were also increasedby applying hydroquinone.
     施用氢醌提高了水田土壤能力和植株含
短句来源
     Response of Different Types of Rice Plants to the Basic Soil Nitrogen Supply
     不同类型水稻品种对稻田土壤基础的响应
短句来源
     Effects of basic nitrogen supply capacity of different texture soils on rice yield in Jiangsu Province
     江苏省不同类型土壤基础能力对水稻产的影响
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The basic amounts of soil nitrogen supply were the largest in the chao soil from Jiangling and the Yellow-brown soil from Wuhan among five upland soils in Hubei Province, while the acid soil from Xingzhou and Yellow-cinnamon soil from Zaoyang were less and the Brown-red soil from Xianning was the least.The nitrogen supply amounts and intensities were large in the early days and then became very small in latter periods in the chao soil and Yellow-cinnamon soil.But they were stable in the Brown-red soil, large...

The basic amounts of soil nitrogen supply were the largest in the chao soil from Jiangling and the Yellow-brown soil from Wuhan among five upland soils in Hubei Province, while the acid soil from Xingzhou and Yellow-cinnamon soil from Zaoyang were less and the Brown-red soil from Xianning was the least.The nitrogen supply amounts and intensities were large in the early days and then became very small in latter periods in the chao soil and Yellow-cinnamon soil.But they were stable in the Brown-red soil, large in the early days and also keeping a certain level in the later stages. And those of the acid chao soil and the Yellow-brown soil were between the above two types.The nitrogen supply characteristics of the five soils were well described by first-order mineralization kinetic model.The speed of nitrogen supply was related to the soil clay contents, the ratio of organic C/organic N and the soil organic matter stability.

用盆载黑麦草和土壤间隔淋洗好气培养的方法,研究了湖北省5种主要旱地土壤的供氮特点。结果表明,供试土壤基础供氮量以江陵潮土和武汉黄棕壤最大,新洲潮土(酸性)和枣阳黄褐土次之,咸宁棕红壤最小。潮土和黄褐土前期供氮多而后期供氮少;棕红壤供氮最平稳,前后期都保证了一定的供氮量,但其供氮强度最弱、供氮数量最少;酸性潮土和黄棕壤处于上述2类土壤之间。土壤氮素矿化一级动力学模型可以较好地描述供土壤的供氮特征。土壤供氮快慢与土壤粘粒含量、有机碳/有机氮比率及有机质氧化稳定系数有关。

Pushbroom Hyperspectral Imager(PHI)is a hyperspectral imaging sensor with 80 wavebands from (411.9) nm to 832.8 nm which was developed by Shanghai Institute of Technical Physics of Chinese Academy of Sciences. From April to May in 2002, three airborne images were acquired at different winter wheat growth stages in Beijing precision agriculture demonstration base. The flight height was 1000 m and the spatial resolution of image reaches 1 m when the hyperspectral images were rectified and spectrally calibrated....

Pushbroom Hyperspectral Imager(PHI)is a hyperspectral imaging sensor with 80 wavebands from (411.9) nm to 832.8 nm which was developed by Shanghai Institute of Technical Physics of Chinese Academy of Sciences. From April to May in 2002, three airborne images were acquired at different winter wheat growth stages in Beijing precision agriculture demonstration base. The flight height was 1000 m and the spatial resolution of image reaches 1 m when the hyperspectral images were rectified and spectrally calibrated. In this paper, some spectrum characteristic parameters which are sensitive to winter wheat growth condition were obtained from images, combined with data of soil basic nitrogen content, soil total nitrogen supplies, nitrogen of variable fertilization, analysis between spectrum characteristic parameters and soil data show that soil basic nitrogen is a pivotal factor to wheat growth. And its influence lasts during the whole winter wheat growth stage. Furthermore, analysis based on the change of wheat spectrum information between two growth stages of winter wheat shows that variable fertilization can improve the growth of wheat. It can also eliminate some growth differences caused by spatial difference of soil basic nitrogen.

以推扫式成像光谱仪PHI(PushbroomHyperspectralImager)获取的冬小麦拔节期、灌浆初期及乳熟期的航空影像数据为基础,提取反映冬小麦长势的光谱特征值,结合地面调查数据,分析了研究区冬小麦的长势情况;对不同时相光谱特征值与土壤基础供氮量、土壤总供氮量以及变量施肥量进行统计分析,分析结果显示:土壤基础供氮量、土壤总供氮量的空间分布差异对冬小麦长势有明显的影响,其中,土壤基础供氮量是影响冬小麦长势的重要因素,它对冬小麦的长势影响贯穿冬小麦的整个生育期;此外,该文还通过变量施肥前后作物光谱信息的变化,建立了冬小麦拔节期与灌浆初期光谱特征值的变化量与变量施肥量之间的联系,对变量施肥的效果进行了初步的评价;研究结果表明:变量施肥能够改善冬小麦长势状况;通过变量施肥,土壤基础供氮量的空间分布差异对作物长势的影响能够得到一定的控制。

The effects of basic nitrogen supply capacity(BNC)of different texture soils(sandy soil,loam soil and clay soil)on potential rice yield(PRY)in Jiangsu Province were studied at 196 experiment plots in 11 counties with 19 different rice varieties.Results showed that basic rice yield(BRY),meaning rice yield without nitrogen application during whole growth stage,was significantly correlated to PRY.BRY of clay soil was the highest in three kinds of soil,and the BRY of sandy soil was lowest.BRY was positively correlated...

The effects of basic nitrogen supply capacity(BNC)of different texture soils(sandy soil,loam soil and clay soil)on potential rice yield(PRY)in Jiangsu Province were studied at 196 experiment plots in 11 counties with 19 different rice varieties.Results showed that basic rice yield(BRY),meaning rice yield without nitrogen application during whole growth stage,was significantly correlated to PRY.BRY of clay soil was the highest in three kinds of soil,and the BRY of sandy soil was lowest.BRY was positively correlated to BNC significantly,even the BRY and BNC varied largely with soil type.While the same BRY,BNC of clay soil was higher than that of loam soil and sandy soil.Nitrogen requirement for 100 kg grain yield of BRY of japonica rice was higher than that of indica rice.BNC was positively correlated with alkaline hydrolysable for all treatments,but the coefficient of determination(R~2)is lower than 0.400 0.

以近年来江苏省广泛种植的19个不同基因型水稻品种为材料,在11个县市区196个田块进行试验,研究江苏省不同类型土壤基础供氮能力对水稻产量的影响。结果表明,土壤基础产量与其所能达到的最佳实际产量呈显著正相关。不同类型土壤基础产量由大到小依次为黏土、壤土、砂土。不同土壤基础产量及其土壤基础供氮量(全生育期植株总吸氮量)变异范围都很大,但不同土壤基础产量和土壤基础供氮量呈极显著正相关。获得相同基础产量时不同类型土壤基础供氮量由大到小依次为黏土、壤土、砂土。100 kg基础产量需氮量呈粳稻大于籼稻的趋势。不同基因型水稻100 kg基础产量需氮量由大到小均依次为黏土、壤土、砂土。江苏省196个田块土壤碱解氮含量与基础供氮量呈现出线性正相关的趋势(R2<0.400 0),但相关性较差。

 
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