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- This creates mulch on the soil surface. 这可以在土地表面形成覆盖物。
- The distance of the water table below the soil surface must be adjusted. 必须调整土壤表面以下水位的距离。
- In our experiment desirable results were obtained by covering the soil surface with plant ash and fine sands. 经试验,用草木灰和细砂覆盖地面的方法,造成干燥的生态条件,对控制发生效果显著;
- Herbs, perennial, acaulescent or shortly caulescent, ascending, rosette but rarely closely appressed to soil surface. 多年生草本，无茎或短茎，上升，莲座丛但很少紧密地贴伏于土表。
- Mulches prevent crusting of the soil surface, thus improving the absorption and movement of water into the soil. 覆盖物可以防治土壤表层板结，使水份容易被土壤吸收。
- Fig. 4. Pycnidiospore survival of Didymella bryoniae placed at soil surface, 5, 15, and 30cm below ground at field. 四、在土壤表面、地表下5、15及30公分土壤深度的瓜类蔓枯病菌柄孢子存活情形。
- The study of herbicide deposition on soil surface and wheat stubble in different wheat mulch conditions is conducted. 研究了不同兑水量情况下，除草剂在免耕麦茬土壤表面和麦茬上的沉积规律。
- Indeed the ecology is destructed continuously and the soil surface nutrition is also washed out. 于自然生态环境中，生态演替和气候转变不断在进行，但速度是相对缓慢的。
- Area of existing vegetation con't. seed to the soil surface where they may compete with the new native grass plantings. 现有植被种子不可落在土壤的表面，因为他们将会与新的天然牧草争夺养分。
- Taproot long-cylindric, deep-rooted with a slender and elongated stem to soil surface. 直根长圆筒状的，根深具一纤细和拉长的茎达土壤表面。
- Twenty 1.25” long spikes do the rest and penetrate the soil surface, aerating it all the while. 20支1.;25寸长的钉子会做剩下的事情，穿透土壤表层，始终在为它通气。
- Perithecia are abundant on those dead twigs falling over on soil surface at any time around the year. 调查北部地区柑橘树冠内枯枝产生孢子角的情形，在5月以前未见形成，5月以后持续至年底皆有孢子角之溢出；
- Layering A method of vegetative propagation in which RUNNERS or STOLONS are pegged down to the soil surface. 压条法：植物进行无性繁殖的一种方法。
- Leaving crop residues on the soil surface helps to increase water infiltration and limit runoff. 留下作物残株在土壤表面，有助于水的浸润而减少迳流；
- The high-density construction in the urban areas makes the soil surface almost impermeable, which leads to an ecological unbalance in the sot, the heat island effect etc. 摘要城市里大量的建筑，不透水铺地与沥青路面取代原有地表，致使城市地基中普遍含水量不足、土壤内部生态失去平衡。
- Abstract： The study of herbicide deposition on soil surface and wheat stubble in different wheat mulch conditions is conducted. 摘 要： 研究了不同兑水量情况下，除草剂在免耕麦茬土壤表面和麦茬上的沉积规律。
- Plastic mulches directly affect the microclimate around the plant by modifying radiation at the soil surface and decreasing soil water loss. 通过调节向土表的辐射，减少土壤水分损失，塑料薄膜覆盖直接影响植物周围的微气候。
- The average soil surface albedo was about 0.23 in Haibei alpine meadow area of Qilian mountain druing whole plant growing period. 就整个植物生长期内来看，祁连山海北高寒草甸地区地表反射率平均约为0.;23。
- The integrated effects exhibited grass mulching> plastic film mulching > shallow scarification > soil surface scarification > the control. 综合各种效应，不同处理优劣顺序为覆草＞盖膜＞浅松土＞表层松土＞对照。
- Methods We recorded labor input, fertilizer, pesticides, fanning activities and leaf fall on the soil surface in trial plots for two years. 该研究通过了解作物与植物篱之间的能流交付作用，通过系统能量投入水平提高与结构优化，建立环境友好的农作系统，最终实现坡地农业的可持续。
