The paper fristly compared the fertile soil with the incinerated sterile soil on the number of micro-algae , soil pH value , soil organic matter soil available phosphorus and soil nitrogen.And then, the author put fertile soil, which included micro-algae, proportionally into sterile samples and cultivated them respectively under illumination condition (micro-algae can live and reproduce)and dark condition(micro-algae will die in some time).The above indices were measured in 0, 30, 60 and 90days respectively, The analyse of the interrelation between the change of micro-algae"s number and the changes of soil pH value, soil organic matter, soil available phosphorus and soil nitrogen indicated:Soil micro-algae which were native to fertile soil conld adapt to the changed circumstance and light acted as a decisive role to the distribution of soil micro-algae.Under dark condition,the micro-algae"s number declined gradually and went to zero in the end,while under illumination condition ,on the 90th day, the micro-algaes number of per gramme was 6-7 times more than that of the beginning.

本文首先對肥沃土壤與經(jīng)高溫焚燒后的貧瘠土壤中的微藻數(shù)量、土壤pH值久久久久久国产免费视网址、有機(jī)質(zhì)含量曰韩一级A片欧美一级A片、有效磷含量和全氮量進(jìn)行比較研究，然后將包含微藻的綠化苗圃地肥土按不同比例接種進(jìn)入貧瘠土樣中在线亚洲欧美va天堂在线，分別在光照條件和黑暗條件下進(jìn)行培養(yǎng)亞洲精選精品黃色視頻，在0天、30天999国产精品永久、60天和90天分別檢測以上指標(biāo)911视频黄色，比較有光條件和無光條件下，即有藻條件和無藻條件下貧瘠土樣所發(fā)生的變化国产理论A片在线观看片，并分別對微藻數(shù)量的變化與土壤pH值日韩AV一级毛片久久久、有機(jī)質(zhì)含量、有效磷含量和全氮量的變化之間做相關(guān)性分析欧美成人人免费HD视频，以評估肥沃土壤中的微藻接種進(jìn)入貧瘠土壤后的生長情況以及對貧瘠土壤的改良作用。

On Helen's cheek all art of beauty set,And you in Grecian tires are painted new

根據(jù)上面的引語影音先锋天堂最新少妇av，我在這里介紹兩個莎士比亞作品中用過的短語：1囯产一级A片久久久免费、Adonis' garden 阿都尼斯花園欧洲一级爆干，以肥土和豐收著稱

The ship is completely buried in the soft loam of the sea bottom .

這條船被完全埋到海底松軟的肥土里。

The soil should be full of loam, a mixture of sand, silt, clay and organic material.

土壤中應(yīng)充滿肥土丁香六月深爱网婷婷五月，一種沙韩av.com，淤泥，粘土和有機(jī)物的混合物欧美熟妇A片黄在线视频。

The ship is completely bur in the soft loam of the sea bottom.

這條船被完全埋到海底松軟的肥土里3344300部。

The ship was completely buried in the soft loam of the sea bottom.

這條船被完全埋到海底松軟的肥土里。3免费看黄色一级片网站。壚姆麻豆国产精品，亞黏土

Of Pai of cabin of irritated ぐ of Xing of the leek that press scepter with respect to disease of be issued to lower levels, blow oneself a bit deep except voidance.

對于根治黃河和引水灌田肥土之事，史載：大司馬史長安張戎欧美熟妇爱大黑吊性爱视频，言水性就下行疾欧美A日韩A，則自刮除成空而稍深。

"May God give you the dew of heaven, and the good things of the earth, and grain and wine in full measure :"

愿神賜你天上的甘露狼狼国产欧美在线视频，地上的肥土亚洲欧美一二三区，并許多五谷新酒。

It is a wise choice to have a try.The most important factor of Cross-bridge rice noodle is soup. It was made by natural hen, pig stone and Xuanwei ham. It needs to be boiled for over 6 hours until the soup become savory and the oil in these stuffs are distilled.

它的湯必須用純正肥土雞為主要材料欧美强奸伦乱片，同時附上筒子骨鸥美裸体黄片、上等火腿用小火慢慢熬，直至湯色清澈透亮国产第一页国产精品，香氣撲鼻国产欧美网站，雞油隨滾滾沸湯翻滾如十月盛開的金菊時方可。

Before using additive,we should test soil to find which additive was useful for soil.Clay was a good additive for making compound fertilizer,but it also had defect for soil and corp.

在測土配方施用復(fù)混肥中变态另类专区av无码，添加劑也需要&測土配方&有99个黄色视频的黄色网站，傳統(tǒng)的粘土礦物添加劑對復(fù)混肥生產(chǎn)和儲存有較好的效果，但對土壤和農(nóng)作物也有不利的影響欧美黄色网站的网址。