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前言目前,在辽宁省农业生产上土地连翻还是轮翻,仍没有完全解决。特别是在何类土壤上采用何种耕作方法凋节土壤肥力因素恰到好处以实现高产稳产,同时又能尽量节省能源、降低成本。对此,辽宁省农科院和其它一些单位对河淤土、沙土、平地棕黄土进行过轮翻耙茬试验,论证了上述三种土壤实行轮翻耙茬的可能性。本试验研究是在坡地棕黄土上进行的,目的在于探讨质地较粘、具备毛管悬着水的坡岗地棕黄土实行减少耕翻次数的可能性,从而找出较为合理的耕作方法。一、试验设计和方法 (1)试验地基本情况:试验田设在校内东方红农场第七队坡岗地上,地势东高西低,坡度5“左右.质地较粘,为粘壤土。地力中上等,O一20厘米耕作层有机质含量
Foreword At present, the land in the agricultural production of Liaoning Province has been turned over or turned over again, and it is still not completely resolved. In particular, what kind of tillage methods are used in which types of soils withered soil fertility factors just right to achieve high and stable production, but also try to save energy and reduce costs. In response, the Liaoning Provincial Academy of Agricultural Sciences and other units on the river silt, sand, flat brown loess staged over stubble stubble trial demonstrated the possibility of the above three kinds of soil turn stubble. This study was conducted on brown loess plateau to explore the possibility of reducing the number of tillage on brown slope loess with sticky texture and capillary tube hanging water so as to find a more reasonable method of cultivation. I. Experimental design and method (1) Basic conditions of the experiment: The experimental field is located on the slope of the seventh team of Dongfanghong Farm in the school, with the topography of the east and the west being low and the gradient of 5 ” First-class, O-20 cm plow organic matter content