查询词典 soil mulch

In order to know the effects of mulch-drip irrigation on soil enzyme activities of saline-sodic soil with shallow water table, activities of alkaline phosphatase, urease, and invertase around the dripper, within 30 cm in horizontal direction and 40 cm in vertical direction from the dripper during the reclamation process, were investigated. Changes and distribution of soil enzyme activities, also their relationships with principal soil environment factors were studied.

为了解地下水浅埋区重度盐碱地覆膜滴灌对土壤酶活性的影响，测定了重度盐碱地在滴灌利用过程中距离滴头不同水平位置（0～30 cm）和垂直深度（0～40 cm）的土壤碱性磷酸酶、脲酶和蔗糖酶活性，并对土壤酶活性的变化、空间分布特征及与土壤环境因子之间的相关关系进行分析。

She says organic material such as leaf mulch, also called leaf mold, can almost always improve poor soil.

她表示类似于 leaf mulch （也称为 leaf mold ）这样的有机物几乎总是能改善贫瘠土壤。

The effect of film mulch (double mulch, single mulch and no mulch), soil type and organic matteron temperature of soil sterilized by solarization to control root-knot nematode was investigated.

试验研究了覆膜方式（双层膜、单层膜和不覆膜）、土壤类型与有机物对太阳能加热时土壤温度的影响。

The 2BP-2 model of plastic film mulch seeder is mainly applicable for plastic film mulch dibbling operation of corn, cotton, sugar beet etc, and capable of accomplishing multi-functions simultaneously such as seed bed leveling, ditching, fertilize deep applying, spreading plastic film over seedbed, punching holes through plastic film, covering soil and so on.

项目简介：该机主要适用于玉米，棉花，甜菜等作物的铺膜播种，可在已耕地上一次完成平土，开沟，施肥，铺膜，膜上穴播，覆土等多项作业。

Experiment was carried out in tobacco's field to compare effect of polythene mulch, straw mulch and straw manuring on soil moisture, flue-cured tobacco growth and leaf quality.

在大田条件下研究了地膜覆盖、秸秆覆盖和秸秆还田对烤烟生长发育、土壤相对含水率、烟叶产质量的影响。

Mulch forms a barrier between the soil and the air. As a result, mulched soil will be cooler in the summertime. And in winter, it may not freeze as deeply as areas without mulch.

盖土形成土壤与空气之间的屏障，其结果是，被覆盖的土壤在夏季会较凉爽，而在冬季，不会让土壤像没有盖土的区域一样冻得那么深。

This calculator can be used for top soil, mulch, etc.

这个计算器可以用来表土，复盖等。

Mulch is placed on top of soil to protect it. Mulch is generally used to a height of about ten centimeters.

地膜通常是覆盖在土壤表层保护土壤，通常要用大约10厘米的高度。

Polythene mulch increase soil temperature, straw mulch enhance and hold soil temperature in low and high temperature.

地膜覆盖有明显的增温效应，覆盖玉米秸秆对温度的影响则表现出&双重&效应：高温时具有降温效应，低温时具有保温特点。

Experiments were conducted in 1955—1957 to determine the merits of the use of gravel as a soil mulch material instead of a mixture of sand and gravel widely used in Kansu.

为了改进这种缺点，我们提出用直径5毫米以上的砾石来代替砂石混合物作为土壤覆盖层。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。