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豫西丘陵旱区年降雨量约为500-700毫米,多集中于夏季,因而在该区主作小麦生育期内降雨偏少。平均仅250毫米左右。这自然满足不了小麦高产的需要。因此,在二年三熟制中,如何利用夏季晒旱休闲,充分保蓄自然降雨,发挥土壤水库作用,保证小麦正常生长用水,是一个十分重要的生产问题。我们于1989-1990年在渑池县西阳旱农试区的红粘土上进行了有关研究,旨在探索一套有利于豫西旱区丘陵晒旱地蓄水保墒的耕作施肥措施。
The annual rainfall in hilly and arid regions of western Henan is about 500-700 mm, mostly concentrated in the summer, resulting in less rainfall during the main wheat growing period in the area. Average only about 250 mm. This naturally can not meet the needs of high-yield wheat. Therefore, it is a very important production issue how to make use of summer drought and leisure, full saving of natural rainfall, playing the role of soil reservoir and ensuring the normal growth of wheat in the two-year three-cropping system. We conducted a study on red clay from 1989 to 1990 in the pilot area of Xiyang drought in Mianchi County to explore a set of fertilization measures for tillage and fertilization that is beneficial to the storage of water and soil moisture in hilly and dry land areas of western Henan.