土样检测发现正常棉叶田所采土样中全氮、全钾含量比红叶田土样减少34.7%和13.9%。
Content of azote and kalium in the soil of normal field is 34.7% and 13.9% less than in red leaf field.
科学家们在一块六英里见方的试验田内进行了勘测，他们发现那些有机碳来自筑造防洪大堤取土用的浅塘，有机碳化合物沉淀至塘底并慢慢渗入地下。
Using a six-square-mile test plot, they found that the organic carbon comes from shallow ponds that were dug to provide soil for flood protection.
沃姆·林克告诉记者，美国航天局在亚利桑那的沙漠中找到一种和月球土壤类似的沙子用做试验田，而火星红“土”采自夏威夷的一座火山。
The US space agency makes ground similar to that on the Moon from sand found in an Arizona desert, while Mars' crimson "soil" is scooped from a volcano in Hawaii, Wamelink told reporters.
起初，模拟实验田有点“不愿”吸水，但是很快就变成了很好的盆栽土。
The imitation ground at first was a little "reluctant" to absorb water, but soon turned out to be good potting soil.
土表的铵态氮也呈波动变化，随着烤田时间的增加铵态氮含量降低。
The concentrate of ammonium-N fluctuated in soil surfaceand decrease as the delay of soil drying.
土表的硝态氮浓度不断增加，烤田增大了复水后硝态氮向地下水淋溶的趋势。
The concentration of nitrate-N increased continuously in soil surface, which resulted in nitrate leaching to groundwater after rewetting.
介绍了垄向区田技术中最佳垱距、土垱厚度、应用范围的确定及其应用中应注意的问题。
The paper introduces the determination of the optimum weir space, the thickness and application limits of the technique and matters needing attention during application.
山东石横电厂粉煤灰充填采煤塌陷地覆土还田的成功经验为平原区塌陷地复垦治理工作提供了依据。
The successful experience of Shiheng Electric Plant provides an important evidence for reclamation of subsided land in plain area.
通过土柱试验，研究玉米和大豆根茬还田对黑土、黑钙土各类水解酶活性的影响。
This paper studied the effects of corn and soybean stubble on soil hydrolases.
利用我市秋季的资源优势，在早、中稻收获后的茬口田，采用免耕土表播种、施肥后再覆盖稻草栽培秋马铃薯。
By using advantageous natural resource in autumn, potatoes are planted in paddy soils and covered by rice haulms without plowing up the soil after the harvest of rice.
结果表明 ，糙皮侧耳菌丝麦麸汁培养基的效果明显优于包括浜田氏培养基在内的其它配方 ，松口蘑土培养基也有良好表现。
The result showed that the P. ostreatus mycelium extract-wheat bran extract medium was superior to Hamata medium and other media significantly, and that the effect of T.
结果表明 ，糙皮侧耳菌丝麦麸汁培养基的效果明显优于包括浜田氏培养基在内的其它配方 ，松口蘑土培养基也有良好表现。
The result showed that the P. ostreatus mycelium extract-wheat bran extract medium was superior to Hamata medium and other media significantly, and that the effect of T.
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