论文部分内容阅读
土壤宜耕性,又叫土壤适耕性。土壤适宜于耕作与否的性状,是土壤粘结性、粘着性和可塑性在耕作时的综合反映。土壤粘结性强,农具不易入土,土块不易散碎;粘着性大,易粘着农具,阻力大;可塑性强,易成拔条,干后土壤板结。理想的宜耕状况应该是,粘结性和粘着性不太强、可塑性不高。这三者的变化除决定于土壤质地以外,还主要决定于耕作时的土壤含水量。土壤过干粘结性太,过湿粘着力强,一般以在可塑性下限以下、合墒时为最好。粘土的可塑
Soil should tillage, also known as soil tillage. Soil suitable for tillage or not, is a comprehensive reflection of soil adhesion, adhesion and plasticity in farming. Strong soil adhesion, tools are not easy to soil, soil block is not easy to break; sticky, easy to stick tools, resistance; plasticity, easy to become braided, dried soil compaction. The ideal condition should be tilling, adhesion and adhesion is not too strong, plasticity is not high. In addition to determining the soil texture, these three changes mainly depend on the soil moisture content during farming. Too much soil adhesion, too wet adhesion, generally below the plastic limit, when combined moisture is the best. Clay plasticity