稻田深层铺打孔膜节水高效栽培技术的研究

Study on High Efficiency and Water-Saving Cultural Technique for Rice Planting by Putting Plastic Membrane with Holes in Deep Soil

利用二道厚的聚乙烯无毒膜为底膜,铺膜深度为30～40cm,插秧后根据土质和渗水情况每平方米打孔0～10个(沙性土、漏水田不打孔,粘重不渗的土壤适量打孔)。经3年的田间试验和技术上的不断创新与完善,达到了良好的效果。与常规田相比,可节水60.3%;节肥32.2%;总根量增加了22.2%;增加有效分蘖3.9个;提高有效穗数17.2%;提早成熟5d,平均增产20%。

Laying impoisonous polyethylene membrane of 2 μm thick in the deep soil 30 to 40 cm far from the ground. After planting, we make 0～10 holes per m2 according to the soil texture and percolation, i.e. we make no hole in the bottom membrane if the soil is sandy and water can percolate easily, and we make proper amount of holes if the soil is clayey and water can't percolate easily. Perfect result has been achieved through experiment and improvement last for three years. Comparing with the control, this practice can cut water use by 60.3% and the fertilizer use by 32.2%. At the same time, total roots increased 22.2% and roots in tilth top soil increased 32%, each plant produced extra 3.9 effective tillering and 17.2%of effective ears, rice matured 5 days earlier and average yield increased 20%.