soil acidity造句
例句与造句
- Biological activity in a soil is influenced by soil acidity and nutrient status .
生物的活动被土壤养分含量状况所制约。 - Component of soil humic substances in larch plantations and its effects on soil acidity
落叶松人工林土壤腐殖物质组分及其对酸度的影响 - Soil acidity can be corrected in a much shorter period compared to ground limestone
所需时间更短，所以在一些国家和地区仍然偏爱使用它。 - The soil acidity and total capacity of nitrogen in guilin were higher than in jinfo mt . this is related with species of plants , the process of soil development and forming
桂林地区土壤ph值和全氮量高于金佛山地区，这与植物种类，土壤发育过程及发育程度相关。 - The reduction of soil nutrient content and enzyme activity , and the apparent increase of soil acidity and bulk density are likely the main reason for soil degradation in mature stand
土壤养分和酶活性的降低以及土壤酸度和容重的显著增加是成熟林土壤质量降低的主要原因。 - It's difficult to find soil acidity in a sentence. 用soil acidity造句挺难的
- Younger leaves faded green and lusterless ; older leaves marginal scorch , interveinal blotchy chlorosis , necrotic patches bleaching and withering ; characteristic of some soil acidity conditions
甜菜锰和铝合并中毒：幼叶褪绿失去光泽，老叶边缘枯黄，脉间有坏死褐色斑点，接着白化，枯萎。这是酸性土壤特有的。 - Comjpare with iron deficiency plate 73 ( incuced iron deficiency series ) ? symptoms of manganese toxicity shown here are typical of some soil acidity conditions but effects involving aluminium toxicity ( plates 69 and 70 ) are more common
与图73铁缺乏相比较（包含缺铁系列） -这里锰中毒症状是一些土壤过酸条件下特有的，但是含有铝中毒（图69和70 ）的作用更常见。 - Mongolica , soil acidity , humus component content , available k , total p , organic p , inorganic p , enzyme activity , and microbe amount of young stand olgensis of the second rotation of larix olgensis in non - rhizosphere soil also
不同发育阶段影响林木生长量的主要养分因子是土壤有机质、速效钾、水解氮以及土壤磷形态的全磷、有机磷、无机磷总量、有效磷、 ca一p和fe一p 。 - Mongolica young stand , secondary natural forest , and the mixed forest of larix olgensis and fraxinus mandshurica rupr . . countermeasures for controlling soil degradation were also recommended . the study got following results : ( 1 ) from young stand to mid - age of larix olgensis , with the closure of canopy and the decrease of undergrowth vegetation cover , soil acidity , enzyme activity , total inorganic phosphorus , available k , soil moisture and total porosity decreased significantly ; while soil organic matter content , humus component content , the amount of three main types of microbes , acid phosphatase activity , and bulk density in rhizosphere soil and non - rhizosphere soil increased with the increase of the amount of forest floor litter ; from mid - age stand to near mature stand , with the decrease of stand density and crown cover as well as the restoration of undergrowth vegetation after preliminary thinning , soil organic matter content , fulvic acid , exchangeable acidity , exchangeable aluminium , neutral phosphatase activity , total amount of inorganic phosphorus , the amount of actinomycetes , soil moisture , and total porosity in rhizosphere soil and non - rhizosphere soil apparently increased ; from near matu re stand to mature stand , soil activity acidity , organic matter content , humus component content , available phosphorus , total amount of amino acid , available k , soil enzyme activity , soil moisture , and total porosity in rhizosphere soil and non - rhizosphere soil decreased , but total phosphorus , soil acidity ( in particular , exchangeable aluminium ) , and bulk density increased
结果表明： ( 1 )从落叶松幼龄林到中龄林，随着林冠的郁闭和林下植被盖度的急剧下降，林地土壤酸度、土壤酶活性、无机磷总量、速效钾、土壤水分含量、总孔隙度呈明显下降趋势，而根际和非根际土壤有机质含量、腐殖质各组分含量、三大类微生物数量、酸性磷酸酶活性和土壤容重随着凋落物的增加呈明显上升趋势；从中龄林到近熟林，由于抚育间伐，林分密度及郁闭度下降，林下植被盖度逐步得到恢复，根际与非根际土壤有机质含量、富里酸、交换性酸、交换性铝、中性磷酸酶、无机磷总量、放线菌数量、土壤水分含量、总孔隙度呈明显的上升趋势；从近熟林到成熟林，随着林龄的增大，根际与非根际土壤活性酸、有机质含量、腐殖质各组分含量、有效磷含量、氨基酸总量、速效钾、土壤酶的活性、土壤水分含量和总孔隙度呈下降趋势，而根际与非根际土壤全磷含量、土壤酸度(特别是交换性铝)和容重呈增加趋势。 - The study mainly introduced some aspets as follow : the reduction of the soil acidity , the eli mination of toxicity of al , fe and mn to the root system , the improvement on acidic soil , the effect on crops yield , as well as the agricultural application of lime in home and abroad and the calculational methods of the required quantity of acidic soil in application
摘要主要介绍了生石灰降低土壤酸度、消除铝铁锰对根系毒害作用、对酸性土壤的改良作用、对作物产量的影响等方面，以及生石灰在农业生产上的国内外应用情况和酸性土壤施用生石灰需要量的计算方法。
