耕层土壤全磷和有效磷含量水平较高。
The total and effect content of soil phosphorus in infield layer are higher.
耕层浅薄，障碍因素较多。
结果表明，薄耕层使米质变劣，产量锐减。
The results showed that the grain yield and rice quality decreased under the conditions of thin plough layer.
棉花根系在耕层分布的位置与产量密切相关。
The distribution position of cotton root system in the tilth is closely related with cotton yield.
它很少营养价值，而且可以改善你的土壤耕层。
It has very little nutrient value, but can improve your soil tilth.
研究了福建省10个耕作土壤耕层不含钾矿物。
The potassium-bearing minerals in surface soils of 10 cultivated soils in fujian province were studied.
沟灌耕层土壤蒸发损失的水分大于滴灌大于渗灌。
Compared with dripping and seeping irrigation, evaporation loss of water from topsoil is the most in furrow irrigation.
油、水、耕层土壤，磷… …和气候一样也正在改变。
Oil, water, topsoil, phosphorous are all peaking…and the climate is changing too.
而且两者耕层土壤的养分含量和理化性质等指标也有明显差异。
Besides, the two systems were significantly different in soil nutrient content and soil physical and chemical properties.
本文主要阐述覆膜栽培耕层土壤主要酶与有效养分变化及其相关性。
This paper mainly states the coherency between the main enzymes and the available nutrient in ploughed layer in soils mulched with film.
通过田间长期定位试验，探讨了耕作措施对农田黑土耕层水分的影响。
This study determined infiltration into soils on black farmland under different tillage systems by long-term experiment.
赤泥耕层土是一种大量消纳赤泥，同时又将其转化为二次资源的赤泥产品。
Red mud topsoil is a kind of product that can absorb a great amount of red mud and transfer it into secondary resources.
黑土耕层各复合体中有机碳含量均明显减少，犁底层亦表现出降低的趋势。
The organic carbon content in each organic-mineral complex of tillage layer is decreasing obviously with tillage period increasing, and that also has a decreasing trend in below plough layer.
不同处理耕层土壤速效氮含量营养阶段均高于生殖阶段，速效磷含量则相反。
The content of available nitrogen in plough layer at the vegetative stage is higher than that at the reproductive stage, but opposite for available phosphorus.
采用夏闲期并苗期秸秆覆盖，能有效提高耕层土壤水分的数量水平和能量水平；
The levels both of amount and energy of soil water were remarkably raised by adoption of mulch with straw in seedling stage as well as in summer fallow time in some cases.
研究施钾和秸秆还田对华北地区不同种植制度下作物产量和耕层土壤钾素状况的影响。
Effect of application of K fertilizer and wheat straw to soil on crop yield and status of soil K in plough layer under different planting systems was studied.
秸秆隔层能有效地阻隔水盐上行，防止耕层盐化，在高水位盐渍化区可采用此种方法。
Residue separate horizon can effectively prevent groundwater and salt up in high watertable saline area.
从相关性测定亦表明：覆膜处理耕层主要土壤酶与有效养分之间相关性高于未覆膜处理。
The coherency test also results that the coherency between soil enzymes and available nutrient in the film-covered film is higher than that in the no-film-covered field.
2000年海淀区农田耕层土壤养分普查结果表明，全区土壤养分含量整体处于中等水平以上。
Soil nutrients analysis was carried out in Haidian District in 2000. It was showed that soil nutrients content in Haidian was at middle level in general.
以耕层土壤质地类别作为制图单位，分为轻粘土、重壤土、中壤土、轻壤土和砂质土五种类型。
The soil were divided into five groups of soil, e, g, light clay, heavy loam, medium loam, light loam and sandy soil, using the group of soil texture of plowed layer as the mapping unit.
“平面型”剖面耕层土壤比“波浪型”剖面耕层具有更大的持水和蓄水能力，接纳降雨能力较强；
The capability of holding and sluicing the water in "flat type" section is larger than that in "wavy type" section. At the same time, accepting the rainfall ability is stronger.
土地生产力、秸秆还田量和土壤水文状态是导致不同利用方式下耕层土壤有机碳含量差异的主要原因。
It is illustrated that the land productivity, amount of straw returning and soil hydrological condition were main factors determining the differences in the SOC contents at various land-use types.
1998年对黑土区(弓棚镇)的耕层土壤养分进行分析，并与1990年该区土壤的化验结果进行了比较。
Soil samples of cultivated horizon from Gongpeng town were analyzed in 1998 and the results were compared with that in 1990.
“波浪型”剖面耕层土壤比“平面型”剖面更容易发生干旱现象，这可能是黑土区土壤易出现干旱现象的主要原因。
Therefore, "wave type" section cultivated horizon may occur drier phenomenon much easier than "flat type" section. This may be the main reason why drier phenomena easily happen in the black soil.
采用抽样调查收集的农田施肥数据，结合耕层土壤养分状况，分析了阜平县主要粮食作物的农田施肥状况和养分结构。
Collecting fertilization data by spot check, combining with the nutrient qualilty of the furrow soil, we analyzed the fertilization and nutrient structure on the food crop farmland of Fuping County.
结果表明：供试土壤施钾后不仅提高耕层土壤速效钾含量，而且也很快向缓效钾方向转化，转化量随钾肥用量的提高而增大。
The results showed that the application of potash could raise both the contents of the fast available K and the slowly-released K in soil.
到了生长后期，由于植株的遮挡，覆膜的增温作用逐渐减弱，基本不存在因覆膜使耕层土壤增温过高，抑制块茎增长的弊端。
There wasn't the malpractice of increasing the ground temperature over high and inhibiting the tuber expanding because of mulching with film.
可见，不同的施肥处理并没有改变TOC和POC的深度分布格局，只是改变了它们在耕层土壤的含量以及POC的分配比例。
Thus, the different fertilization practices tended to(affect) not the depth distribution of TOC and POC but the content and proportion of POC in topsoil.
选用黄土高原地区的安塞黄绵土、绥德黄绵土、杨陵粘黄土、杨陵农地耕层土进行人工降雨溅蚀试验 ，研究了降雨特性和土壤结构对雨滴溅蚀的影响。
Simulated rainfall experiments with 3 loessial soils of Ansai, Suide, Yangling, and Yangling arable soil were conducted to evaluate effects of rainfall and soil structure on raindrop splash.
选用黄土高原地区的安塞黄绵土、绥德黄绵土、杨陵粘黄土、杨陵农地耕层土进行人工降雨溅蚀试验 ，研究了降雨特性和土壤结构对雨滴溅蚀的影响。
Simulated rainfall experiments with 3 loessial soils of Ansai, Suide, Yangling, and Yangling arable soil were conducted to evaluate effects of rainfall and soil structure on raindrop splash.
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