【摘要】 水田整地工艺方案的比较,应当从农机具—土壤—农艺系统进行多学科综合研究,才能科学地反映耕作机理,求得比较符合生物学特性的客观结论。本文针对南方水田地区两种典型整地工艺方案,从农机作业动力经济性,耕层土壤理化性质变化及对水稻移栽后一系列生物学特性进行了系统综合的研究。认为通常所谓旋耕作业工艺会对水稻土造成粘闭板结的说法是没有根据的。问题在于合理地控制机械作业的条件。更多还原

【Abstract】 To compare soil preparation processes, it is necessary to carry out a comprehensive multiplicate study of a system composed of farm machinery, soil and agronomy.The paper deals with two principal ways for soil preparation in paddy area of Zhejiang, ploughing-raking and direct rotor ploughing, a systematic and comprehensive study is made on the different effects of the two soil preparation processes produced on the economics and productivities of the farm machinery operation, the physical and chemical properties of soil layers, and plant growth, after transplanting, it is found that it is utterly groundless to conclude that rotor ploughing process makes soil hardened and impervious. The key to the problem is to rationally choose a reasonable condition for rotor ploughing.更多还原