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tilled crops
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  相似匹配句对
     Expert on Crops
     让土壤里长出希望的农作物专家——记国家科技进步二等奖获得者赵振东
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     Polyembryony in Crops
     作物多胚现象研究综述
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     No-tilled paddy improved the status pf water, heat, air and nutrients of soil and created the environment condition for crops growth and development.
     水田自然免耕改善了土壤水、热、气、肥状况,为稻麦生长创造了良好环境条件,表现出根系发达,活力强,吸收养分多;
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The amounts of soil erosion with relative stability in a certain slope range in- creased with sloppe gradient,but not in propor-tion to it.When slope increased to 26,its amounts of soil erosion were much higher than that of the plots with 10°,14°,18°,and 22°.But this rule did not exist on the slope with 26° whose surface was covered by vegeta- tion and the amounts of soil erosion in these plots could be decreased to the allowable ranges.The effective practice for controlling soil rosion is to raise the degree...

The amounts of soil erosion with relative stability in a certain slope range in- creased with sloppe gradient,but not in propor-tion to it.When slope increased to 26,its amounts of soil erosion were much higher than that of the plots with 10°,14°,18°,and 22°.But this rule did not exist on the slope with 26° whose surface was covered by vegeta- tion and the amounts of soil erosion in these plots could be decreased to the allowable ranges.The effective practice for controlling soil rosion is to raise the degree of vegetative cov- er.The effects on controlling soil erosion occured in different velocity for various types of veg- etation,i.e.the grass family was the most rapid,the tilled crop was less and the bush was the slowest.for controlling soil evosion.

土壤侵蚀量随着坡度增大而升高,但不成比例增长,在一定坡度范围内具有相对的稳定性。当坡度增大到26°时,土壤侵蚀量显著地高于10°,14°,18°和22°小区。坡面覆盖植被后,上述情况明显改变,且能使26°坡面侵蚀量降到允许范围。因此,提高植被覆盖度是控制土壤侵蚀最有效的措施。植被类型不同,其生效也有快慢之差,以草类最快,中耕作物次之,灌丛最慢。

 
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