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贵州地处云贵高原东侧的梯级状斜坡地带,受河流切割的影响,田高水低,农田水利灌溉受到极大的限制。在全省1200万亩稻田面积中,望天田和半望天田面积占四分之一以上,保证灌溉面积不大,全省水稻生产常因旱灾而减产。旱情严重的年份,全省水稻总产比上年减产幅度高达30％以上。为了增强水稻生产的丰产稳产性,我们从1984年以来开展了抗旱栽培技术的研究。在改进育秧技术方面,
Guizhou is located in the eastern slope of the Yunnan-Guizhou Plateau slope-like slope, affected by river cutting, low field high water, irrigation water conservancy has been greatly limited. Of the 12 million mu of paddy field in the province, the areas of Wangtiantian and Half-Tiantian occupy more than a quarter of the total area, ensuring that irrigated area is not large and the province’s rice production is often cut off due to drought. Severe drought years, the province’s rice output reduction over the previous year as high as 30%. In order to enhance the yield and stability of rice production, we have conducted drought-resistant cultivation techniques since 1984. In improving seedling technology,