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随着坡改梯工程的不断深入,如何改善新修梯田的土壤水分状况、提高梯田单位面积产值、调动广大群众参与梯田修筑的积极性等成为亟待解决的问题。作者选择在定西市安家坡新修梯田上布设试验小区,研究不同耕深对耕作层土壤水分的影响及不同施肥水平对作物产量的影响。研究得出耕深33 cm为适宜耕深;以亩施2 500 kg左右有机农家肥作基肥,配合氮磷混合化肥既能培肥地力,又可提高新修梯田单位面积产值,是新修梯田的一项快捷培肥措施。
With the deepening of the slope to ladder project, how to improve the soil moisture status of the newly-built terraced fields, increase the output value per unit area of terraced fields, mobilize the masses to participate in the construction of terraced fields has become an urgent problem to be solved. The author chose to set up a test plot on the newly-repaired terraces in Anjiapo, Dingxi City to study the effects of different tillage depths on soil moisture and the effect of different fertilization levels on crop yield. It is concluded that the 33 cm tillage depth is suitable for tillage farming. Using 2 500 kg of organic farmyard manure as basal fertilizer, combined with nitrogen and phosphorus fertilizers not only fertilizes the fertility, but also increases the output value per unit area of newly-built terraces. A quick fertilization measures.