关于土壤采样的短英语作文

关于土壤采样的短英语作文

Soil sampling is a method of collecting soil samples, including sample deployment and sampling techniques. Sectional view taken soil samples should be recorded after the end of the cross-sectional observation. In the cross-sectional sample should be preceded refurbishment, cleaning, slashing the outermost layer of surface dust, then press the top-down hierarchical layer by layer from the central part of the typical sampling
To analyze the metal content of the soil, you should avoid using metal utensils sampling.Sampling in the field, since the existence of the soil itself heterogeneous spatial distribution, and therefore should block as a unit, multi-point sampling, and then mixed into a mixed sample, so as to better represent the soil properties of the sample area.Sampling methods generally have the following. Diagonal sampling: suitable for wastewater irrigation plots in each decile diagonal central point sampling. Quincunx sampling: suitable for the small size, flat terrain, soil uniform plots. Checkerboard sampling: suitable for medium-sized, flat, substantially intact terrain, soil less uniform block. Serpentine sampling: suitable for smaller terrain is not flat, uniform enough soil 旦伐测和爻古诧汰超咯sampling point shall take more land. Depending on the depth of sampling purposes, the general mining topsoil 0-20cm. To take the mixed sample 1-2kg. Such as the number of available quartering much excess soil discarded. The soil samples will be collected into a bag or polythene bag inside and outside should be attached to label the sample number, name, sample depth, sampling location, date, collecting people. For chemical analysis (except heavy metal analysis) soil samples available soil auger sampling, as a soil sample volume measurement, the sample application blade ring.

看看有没用 soil pollution our country——china soil pollution was very serious.we should be focus on that.and am erica always have had more soil pollution.soil pollution will make our food very dangerous.our vegetables and fruits will got some trouble.not too much nuturation.as that you know,we should be have to eat a lot of food will prove you can to be health every day.it's very dangerous.so we should be focus on our soil pollution problem to our gvt.if it hasn't do this,the gvt will have a big problem in the future. 土壤污染 我们的国家——中国土壤污染问题非常严重.我们应该要注意这些问题.并且美国也一样有更多的土壤污染的问题.土壤污染导致了我们的食物食用起来变得非常的危险.我们的蔬菜和水果将会有大问题.没有太多的营养.就如我们大家所知道的一样,（如果这样子的话）,我们就不得不要吃更多的食物来保证我们每天能够所需的健康.它是非常危险的.所以,我们的政府都应该要注意我们的土壤污染问题.如果没有那样子做,政府将会在将来面临更大的问题