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水稳性
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    The waterstable aggregates (> 0.25mm in diameter) and soil permeability is increased by 13.4—22.6%and 12.5—38.9%, respectively。 Thus the soil chdemical and physical property was greatly improved。
    发育良好的碱茅草地,大于0.25mm的水稳性团聚体增加13.4~22.6%,土壤渗透性增加12.5~39.9%,达到了改良利用盐渍土的效果。
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    Therefore, waterstable aggregates and microaggaregates, soil accumulated temperature and fluctuation, availability of water and nutrients, Eh, humus contents and activity of microbes and enzymes were increased as compared with the traditional tillaging methods.
    因此,与传统耕作法相比,自然免耕的水稳性团聚体和微团聚体增加,土壤积温增高,温差变大,水分和养分的有效性提高,Eh和腐殖质含量增高,微生物和酶活性增强。
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    The content of organic matters in soil could be increased and depletion of soil available nitrogen could be decreased. The content of soil waterstable aggregate could also be increased through planting soybean.
    收获期大豆根区土壤全氮基本保持平衡,增加有机质含量,减少速效氮的消耗,提高土壤水稳性团聚体含量,改善土壤结构。
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    The general amount of soilgroup in tilth top soil of sugarbeet were higher,the stability of every grade soil group was al-so higher.
    甜菜茬耕层土壤的水稳性团聚体总量较高,各粒级团聚体的稳定性也较高;
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    The main nutrition contents,enzymie activities,qualification of aquaous steady globs and salt accumulation in continuous cropping plastic greenhouse were investigaled.
    采用面上调查和定点观测相结合的方法,分别对哈尔滨郊区不同连作(轮作)年限的大棚土壤的主要养分含量状况、酶活性、水稳性团粒分级及盐积状况进行研究分析。
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It was shown by two-year observation of sainfoin pastures aged from one to nine years that with the development of saiufoin pasture in age the soil fertility and the amount of full-nutrients of nitrogen and phosphorus as well as the soil porosity and water-stable granules increased,while the soil density,specific gravity and compacness decreased, the result proved that sainfoin could play quite a good role in improving the physicochemical properties,raising soil fertility,making the amount of the soil nutrients...

It was shown by two-year observation of sainfoin pastures aged from one to nine years that with the development of saiufoin pasture in age the soil fertility and the amount of full-nutrients of nitrogen and phosphorus as well as the soil porosity and water-stable granules increased,while the soil density,specific gravity and compacness decreased, the result proved that sainfoin could play quite a good role in improving the physicochemical properties,raising soil fertility,making the amount of the soil nutrients reseve larger and turning nutrient supply for plants into a better condition,The optimum lengh for sainfoin pasture is about five years.

通过对1—9年生红豆草地的观测表明,随着红豆草生活年限的增长,土壤有机质及氮、磷全量养分逐年提高,土壤容重,比重和坚实度递减,而土壤孔隙度,水稳性团粒递增。显示出红豆草具有改善土壤理化性状,提高土壤肥力,增加土壤养分储量,增强养分供应强度的良好作用,但红豆草利用年限以五年为宜。

This review paper discusses the results obtained recently from researching into the soil physical properties under infiltration ridge tillage system, comparing with the conventional tillage system, the infiltration ridge tillage system can construct more favourable root system environment for the growth of rice, wheat field bean or rape crops.

起垄沟泥加筑垄埂,使根层增厚10—15cm,上体表面扩大27.4—42.4%;变潜育层为氧化层,土体酥软成豆大粒状结构;蓄水量增加50~200%,减少灌水74.2%;土壤水分数量、存在形态、空间分布、能态、运动方向和速度及对作物的有效性都发生了有利的显著变化;叶面蒸腾增大3.6%,地下渗漏减少3.9%;增加吸收太阳辐射3%,使垄埂日间增温(2—5℃);反射率增加,夜间降温0.5—1.0℃,使能量交换更频繁;土壤氧化还原电位高100—200mv,还原性物质总量低75—80%;耕层中,>0.25mm的水稳性团聚体明显提高;容重增大,与旱地、旱土相比,总孔隙仍较高,孔隙稳定性增加,且主要是毛管水,空气仍占4—9%。总之,呈现出有利于作物生长的土壤物理状况变化。

Status of soil fertility and interrelationships of fertility factors under a new tillaging method—soil virginization technique in paddy fields have been studied in field experiment and laboratory analysis. The results showed that the soil virginization created the microrelief with ridges and furrows, increased plough layer thickness and soil surface area, formed excellent soil horizons, and favoured water movement, heat, gas and nutrients in soils. Therefore, waterstable aggregates and microaggaregates, soil...

Status of soil fertility and interrelationships of fertility factors under a new tillaging method—soil virginization technique in paddy fields have been studied in field experiment and laboratory analysis. The results showed that the soil virginization created the microrelief with ridges and furrows, increased plough layer thickness and soil surface area, formed excellent soil horizons, and favoured water movement, heat, gas and nutrients in soils. Therefore, waterstable aggregates and microaggaregates, soil accumulated temperature and fluctuation, availability of water and nutrients, Eh, humus contents and activity of microbes and enzymes were increased as compared with the traditional tillaging methods. Concequently, the crop demand for water, heat, gas and nutrients at all of its growth stages and development are satisfied steadily, uniformly, profusely and adequately under the soil virginization.

本文研究了一种新的耕作法——水田自然免耕技术的土壤肥力状况及其肥力因子之间的相互关系。结果表明:自然免耕创造了垄沟相间的微地形,耕作层增厚,土体表面扩大,形成了良好的土体层次,有利于土壤中的水、热、气、肥的运动。因此,与传统耕作法相比,自然免耕的水稳性团聚体和微团聚体增加,土壤积温增高,温差变大,水分和养分的有效性提高,Eh和腐殖质含量增高,微生物和酶活性增强。所以,水田自然免耕,能使土壤稳、匀、足、适地供给作物生长发育所需的水、热、气,肥(养分)。

 
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