- preserve moisture and fertility
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保水保肥的英文
例句与用法
- High intensity fire can significantly destroyed the soil structure . after low and moderate intensity fire had little effect on degree of soil solidity and porosity , which was different from that on soil capability of preservation of water and fertilizer
高强度火烧对土壤结构的破坏严重，而低、中强度火烧对土壤结构破坏不大，但对土壤的保水保肥能力影响显著。 - The research results mainly show : ( 1 ) the ecological degradation characteristics of wuxi county include : some soil is thin and barren and its water and fertility conservation abilities are poor , gradual degradation of soil results in decrease of vegetation diversity and the vegetation community structure gradually inclines tc simplicity from complexity . the types of soil and water loss in wuxi county mainly involve surface erosion and gully erosion . according to investigation , surface erosion area occupies 80 % or so or erosion area , in which the slope farmlands surface erosion area accounts for about 70 % of farmland erosion area
研究结果主要包括： ( 1 )巫溪县生态退化特征表现：作为生物生长基质的部分土壤薄而贫瘠，保水保肥能力差，部分地区基岩裸露，土壤的不断退化导致植物种多样性减少，植物种群结构逐步由复杂趋向简单化；县内水土流失的类型主要包括面蚀和沟蚀两大类，据调查，面蚀面积占侵蚀总面积的80左右，其中坡耕地面蚀占耕地侵蚀面积的70左右。 - The result indicated that straw mulching could increase soil porosity by 2 . 88 % - 5 . 76 % , reduce soil bulk density by 1 . 86 % - 3 . 73 % and the content of soil water with straw mulching was higher than that with no straw mulching treatment ( ck1 ) at different growth stage , improve water - stable aggregate ; and increase soil organic matter , available n , available p , available k , improve soil perviousness and soil retention of water and fertilizer
研究结果表明，与对照ck1 ，相比，秸秆覆盖可使土壤总孔隙度增加2 . 88 % ~ 5 . 76 % ，土壤容重降低1 . 86 % ~ 3 . 73 % ，并且各生育期覆盖处理的土城含水量均比对照高，并且秸秆覆盖还田对促进土壤团粒结构形成具有较大作用，改善了土坡通透性和保水保肥性；同时秸秆覆盖还田使土壤有机质、全氮、速效氮、速效磷、速效钾得到明显提高，从而培肥地力。