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梯田建设作为增强农作后劲、解决水土流失贫困地区温饱问题的一项主体工程,在农业基本建设中占有相当重要的位置。为了进一步探讨梯田修建和利用中各因素与产量的关系,使该项工作向科学化发展,以正确指导生产实践,取得最优经济效益,现根据我区1988年按农作物测产技术要求布设的4200多亩梯田和对照坡耕地的小麦测产资料,就梯田产量与田面宽度,地形部位、修筑年限、原田面坡度、物化投入五个因子的关系,分别进行统计分析,结合论证当前梯田修建中的一些技术问题。 一、梯田不同田面宽度与粮食产量的关系 田面宽度是梯田建设中要确定的关键参数。由于田面宽度直接涉及梯田土壤水分运动状态和其它小气候因素,所以田面宽窄与产量有密切关系。 确定最优田面宽度,一般要考虑三个因素:修建地块土层的薄厚;修建工程量的大小及对地坎高度的要求:建成后便于耕作并应发挥最优增产效益。
Terraced farmland construction as a main project to enhance farmwork and solve the problem of food and clothing in poor areas with soil and water loss occupies a very important position in agricultural capital construction. In order to further explore the terraces construction and utilization of the relationship between the factors and yield, so that the work to the scientific development, to correctly guide the production practice, to obtain the best economic benefits, is based on our area in 1988 by the technical requirements of the survey and measurement of crops laid 4200 acres of terraces and control slope farmland of wheat production and measurement data on the terraced fields and the width of the field, topography, construction years, the original surface slope, material and chemical inputs five factors, respectively, statistical analysis, combined with the demonstration of the current terraced construction Some technical problems. First, the terraces of different width of field and grain yield relationship The width of the terraces to be determined in the construction of the key parameters. Because the width of the field directly relates to the movement of soil moisture in the terraces and other microclimate factors, the width and width of the field are closely related to the yield. To determine the optimal width of the field, generally consider three factors: the thickness of the soil layer of the construction site; the size of the construction project and the requirements of ridge height: after the completion of convenient farming and should play an optimal yield increase.