Analysis of the effects of soil, plant and atmospheric factors on the calculation of evapotranspiration is made on the basis of field experimental data.
本文从田间实验资料入手，逐一分析了土壤、植物、大气因子对蒸散计算的影响。
The kinetic characters of Zn in soil and soybean plant under soybean, continuous cropping stress were investigated by pot experiments, field experiments and chemical analysis indoors.
本文通过田间与盆栽对比试验及室内分析相结合的方法，研究了大豆连作胁迫下，土壤与植株锌营养变化特征。
Combinating the siol column and potted plant experiment synthesize analysis that the soil alkalinity below 30% can be all improved by hydraulic and agricultural measure without the chemical amendment.
结合土柱试和盆栽试验的结果综合分析，在土壤碱化度低于30%的轻、中度碱化土壤通过水利与农业措施相结合的办法而不用化学改良剂就可以改良好；
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