1Cultivation of land; tillage.

1. 1.1in singular The condition of tilled soil, especially in respect to suitability for sowing seeds.
   （是否适合播种的）耕作程度
   he could determine whether the soil was of the right tilth

   他能判断土壤是否具备耕作适度。

   Example sentencesExamples

   • Some of the claims being made for gypsum include: improving high pH soils by lowering pH; increasing the ratio of calcium to magnesium; and improving soil tilth and permeability.
   • Good soil tilth is still a prerequisite for effective one-pass incorporation.
   • Rotating corn with forages on minesoils is encouraged because soil tilth rapidly improves with forage cover.
   • It is glomalin that gives soil its tilth - a subtle texture that enables experienced farmers and gardeners to judge great soil by feeling the smooth granules as they flow through their fingers.
   • Peter's whole farm is like a research farm where he tries different cover crops and studies their effect on insect populations as well as the tilth of his soil.
   • This organic matter helps to maintain good tilth, helps to hold moisture, and acts as a storehouse for plant nutrients.
   • Crop residue has a nutrient value and will catch snow, reduce evaporation, increase infiltration, and improve soil tilth.
   • Heavy repeated applications of manure and/or sludge increase soil fertility and enhance the tilth of minesoils.
   • This he mows and lets decay, allowing the organic matter to break down, improving tilth.
   • Prior to planting, remove all perennial weeds and till in a 1- to 2-inch layer of compost, applying it more liberally where soil tilth or fertility are less than optimum.
   • Intense ultraviolet radiation, especially at higher elevations, damages soil tilth.
   • Continuous cropping on these soils has meant declining organic matter and tilth, and increased susceptibility to drought and other adverse conditions such as erosion.
   • Putting carbon in the soil improves tilth, soil structure, nutrient retention, rooting depth and stability.
   • They reduce soil erosion, improve soil tilth, help reduce pesticide use, and enhance agricultural profitability.
   • Historically, when forages were part of the rotation, crop rotations positively affected nutrient release and improved tilth.
2. 1.2 Prepared surface soil.
   耕过的表层土
   the final levelling of a tilth

   Example sentencesExamples

   • Since the tilth isn't terribly fine the crops will be those which don't mind a few lumps and bumps - potatoes, beans, peas and courgette mostly.
   • Rake soil first to a fine tilth and don't forget to label the rows.
   • Select a sheltered, well-lit spot with a well-drained soil and dig over the earth to remove all weeds, before raking the surface to establish a fine, level tilth.
   • Usually, a pass is made with a rolling cultivator to bust up the clods and make for a finer tilth.
   • This is a good time to put some effort into the less glamorous side of gardening, although creating the perfect tilth can be rewarding in itself.
   • The land should be well ploughed to the depth of 15 cm to 20 cm, and harrowed to provide reasonable tilth and good ridges.
   • Gypsum is inexpensive so use as much as you need to loosen up your tilth.
   • So you'll be out in the garden with a spade for the rest of the day, working up a fine tilth, or whatever?
   • The soil has to be either specifically-designed seed-raising mix when growing them in pots or punnets, or a well-worked, light, fertile tilth when growing in garden beds.
   • Prepare the ground by digging in plenty of organic matter, work this into a fine tilth, level it, and lay out your plants.
   • When the jungle was cleared out back and laid to turf I told the blokes to rotavate all the bulbs into the tilth and let them take their chances.
   • The gap created by the jagged edge which is now further into the lawn should be filled with garden soil, sifted to a fine tilth.
   • In general, the same seed bed preparations are recommended for velvet bean as for maize, but a fine tilth is not essential.
   • With the ground raked to a final tilth, and working from boards on the turf side of the job (so as not to walk on the newly-prepared ground), the turfs are rolled out and butted together as tightly as possible.