soil acidity造句
例句與造句
- Biological activity in a soil is influenced by soil acidity and nutrient status .
生物的活動被土壤養(yǎng)分含量狀況所制約。 - Component of soil humic substances in larch plantations and its effects on soil acidity
落葉松人工林土壤腐殖物質(zhì)組分及其對酸度的影響 - Soil acidity can be corrected in a much shorter period compared to ground limestone
所需時間更短，所以在一些國家和地區(qū)仍然偏愛使用它。 - 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
桂林地區(qū)土壤ph值和全氮量高于金佛山地區(qū)，這與植物種類，土壤發(fā)育過程及發(fā)育程度相關(guān)。 - 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
土壤養(yǎng)分和酶活性的降低以及土壤酸度和容重的顯著增加是成熟林土壤質(zhì)量降低的主要原因。 - It's difficult to find soil acidity in a sentence. 用soil acidity造句挺難的
- Younger leaves faded green and lusterless ; older leaves marginal scorch , interveinal blotchy chlorosis , necrotic patches bleaching and withering ; characteristic of some soil acidity conditions
甜菜錳和鋁合并中毒：幼葉褪綠失去光澤，老葉邊緣枯黃，脈間有壞死褐色斑點，接著白化，枯萎。這是酸性土壤特有的。 - 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
與圖73鐵缺乏相比較（包含缺鐵系列） -這里錳中毒癥狀是一些土壤過酸條件下特有的，但是含有鋁中毒（圖69和70 ）的作用更常見。 - 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
不同發(fā)育階段影響林木生長量的主要養(yǎng)分因子是土壤有機質(zhì)、速效鉀、水解氮以及土壤磷形態(tài)的全磷、有機磷、無機磷總量、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
結(jié)果表明： ( 1 )從落葉松幼齡林到中齡林，隨著林冠的郁閉和林下植被蓋度的急劇下降，林地土壤酸度、土壤酶活性、無機磷總量、速效鉀、土壤水分含量、總孔隙度呈明顯下降趨勢，而根際和非根際土壤有機質(zhì)含量、腐殖質(zhì)各組分含量、三大類微生物數(shù)量、酸性磷酸酶活性和土壤容重隨著凋落物的增加呈明顯上升趨勢；從中齡林到近熟林，由于撫育間伐，林分密度及郁閉度下降，林下植被蓋度逐步得到恢復(fù)，根際與非根際土壤有機質(zhì)含量、富里酸、交換性酸、交換性鋁、中性磷酸酶、無機磷總量、放線菌數(shù)量、土壤水分含量、總孔隙度呈明顯的上升趨勢；從近熟林到成熟林，隨著林齡的增大，根際與非根際土壤活性酸、有機質(zhì)含量、腐殖質(zhì)各組分含量、有效磷含量、氨基酸總量、速效鉀、土壤酶的活性、土壤水分含量和總孔隙度呈下降趨勢，而根際與非根際土壤全磷含量、土壤酸度(特別是交換性鋁)和容重呈增加趨勢。 - 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
摘要主要介紹了生石灰降低土壤酸度、消除鋁鐵錳對根系毒害作用、對酸性土壤的改良作用、對作物產(chǎn)量的影響等方面，以及生石灰在農(nóng)業(yè)生產(chǎn)上的國內(nèi)外應(yīng)用情況和酸性土壤施用生石灰需要量的計算方法。