为了探究旋耕机不同时速及灌水回耕次数对土壤改良效果的影响,以雷州市塘塞村垦造水田成形田块为研究对象,通过添加土壤改良剂设计提高土壤有机质含量1%,使用改进旋耕机对30 cm耕作层土壤进行回耕处理试验,试验对成型田块在自然状态下干湿回耕组(EG)和对照干地回耕组(CK)的时速和回耕次数进行了设计,检测两种处理方式对土壤有机质及pH值的影响。其中EG组中旋耕机采用2~7 km/h进行干湿地回耕后有机质含量提升均值范围为1.05%~1.11%,pH值提升均值范围为6.50~7.25,CK组有机质提升2.49%,pH值为6.06。EG组中灌水回耕处理能使混合料水分和粒度及料中各组分均匀分布,提高土壤及改良剂的混匀程度,有效地提高土壤耕地质量和蓄水保土能力,促进粮食高产稳产。
In order to explore the effects of different speeds of rotary tiller and the number of irrigation and re-cultivation on soil improvement, the field of the paddy field in Tangsai Village of Leizhou City was taken as the research object, and the soil organic matter content was increased by 1% by adding soil modifier. The improved tiller was used to carry out the back-tillage test on the soil of 30cm cultivated layer. The test was carried out on the speed and the number of back-cultivation of the dry and wet-returning group (EG) and the dry-field returning group (CK) of the formed field in the natural state. The design was designed to examine the effects of the two treatments on soil organic matter and pH. In the EG group, the average value of organic matter content in the dry-wet land after 2-7km/h was 1.05%-1.11%, the average value of pH increased from 6.50-7.25, and the organic matter in the CK group increased by 2.49%. The value is 6.06. The irrigation and re-cultivation treatment in the EG group can make the moisture and particle size of the mixture and the components in the material evenly distributed, improve the mixing degree of the soil and the improver, effectively improve the quality of the cultivated land and the ability of water storage and soil conservation, and promote the high yield and stable yield of the grain. The research can also accumulate construction experience for the paddy field project in Guangdong Province.