研究了不同秸秆还田量对免耕黑土速效养分含量和玉米产量的影响。
In this study, the effects of different amounts of residue incorporation on the contents of soil available nutrients and corn yields were examined under no-till practices.
结果表明，覆膜穴播可以提高土壤地温，保持土壤水分，促进土壤速效养分的充分释放和有效利用。
The results showed that, mulched hole planting could improve soil temperature, conserve soil moisture, and promote full release and efficient use of soil rapidly available nutrients.
大豆覆膜增加了土壤水分与速效养分含量。
It increased plough layer soil water and available nutrients content.
结果表明，一年中混交林及纯林土壤速效养分和叶养分含量随季节而异。
The results showed that nutrients contents of the tree leaves and contents of the available nutrients of soil in the mixed stand and pure one varied with seasons of the year.
结果表明，全量养分对生态系统恢复的响应与其相应的速效养分明显不同。
Results showed that responses to the recovery process were obviously different between the total nutrient and its corresponding available one.
土壤速效养分含量是多年培肥土壤形成的，不属当年施肥。
The content of quick effective nutrient of soil is formed by applying fertilizer for years.
大多数土壤速效养分的半方差结构明显，结构性方差占总方差的比例均在50%以上。
The semi-variation structure for most soil available nutrients was obvious and the rate of structural variation accounted for more than 50% of the total variation.
相关分析表明，磷酸酶、脲酶、蔗糖酶活性与有机质、全氮及速效养分均呈极显著正相关。
Through correlation analysis, active relationship existed between three kinds of enzyme activities and organic matter and available nutrient.
得出结果：26年生杉阔轮栽模式土壤有机质和全N含量增加．土壤生化活性加强．土壤速效养分供应量增强；
The results indicated that the soil organic matter and total N of 26-year-old PBCA stand increased. the activities of soil biochemistry strengthened. the amount of available nutrient supply enhanced.
土壤有机质含量、全量养分含量和速效养分含量均在采伐初期2～5年增加，随后又迅速减少，尤其是表层土壤变化更为明显；
The organic matter content as well as the total and available contents of nutrients increased at the first 2~5 years, and then declined rapidly, especially for those in topsoils.
交换性阳离子组成、养分全量及速效含量可作为评价红粘土红壤化学肥力演化的指标。
The composition of exchangeable cation and the soil nutrient content can be used as the indexes to evaluate soil chemical fertility evolution, especially the former is more important.
在陕西眉县选择农田土壤养分含量不同的地块，研究不同含量的有机质，碱解氮、速效磷、速效钾与玉米果穗穗部性状及产量的关系。
In order to study the relationship between yield, maize ear treats and organ matter, N-OH, available P and K, we selected field block with different soil nutrition in Mei county, Shaanxi province.
灰色分析的结果表明，土壤速效磷的形成主要受到土壤养分，尤其是碳、氮养分的影响。
The results of grey relational analysis revealed that the content of soil nutrients, in particular C and N, had a major effect on avail-P.
土壤碱解氮、速效磷和速效钾等养分的含量是指导科学施肥的重要依据之一。
The content of soil nutrients, especially available nitrogen, phosphorus and potassium is one of the important bases to instruct scientific fertilization.
土壤碱解氮、速效磷和速效钾等养分的含量是指导科学施肥的重要依据之一。
The content of soil nutrients, especially available nitrogen, phosphorus and potassium is one of the important bases to instruct scientific fertilization.
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