【摘要】 采用盆栽试验和田间试验 ,分析了谷子水分利用的特性及其与生态因素的关系 ,建立了谷子节水栽培的高产高效技术体系。结果证明 ,谷子的水分利用效率较高 ,在试验条件下达到 8.90 g/ ( kg·盆 ) ,比各种主要粮食作物高 1 8.6 %～ 1 0 6 .9%。不同生育阶段 ,以抽穗后的结实阶段水分利用效率最高 ,为 1 9.0 9g/ ( kg·盆 )～ 1 9.3 2 g/ ( kg·盆 ) ,比幼苗期高 1 .81倍～ 1 .84倍 ,比拔节孕穗阶段高 4.55倍～ 4.6 1倍。建立的“四适一定”节水高产技术体系增产 3 1 .6 % ,水分利用效率提高 3 1 .4% ,节水 2 3 .9%。谷豆分带种植节水高效技术体系 ,纯收入增加 41 .0 % ,水分利用的经济效益提高 40 .9% ,节水效率高达 2 9.1 %。更多还原

【Abstract】 Through the test in pots and fileds the relationship between character of water use and ecological factor was analyzed, and the high yield and high efficiency technical system of water saving cultivation in millet was set up. The results showed that the millet had high water use efficiency. Under the conditon of test it was 8.90 g/(kg·pot), and was increased by 18.6%~106.9% compared with other major grain crops. During various growth stage, the water use efficiency in seed set phase was the highest. It was 19.09 g/(kg·pot)~19.32 g/(kg·pot), and was 1.81~1.84 times as in seedling stage, was 4.55~4.61 times as in stem elongation to booting stage. When applying the water saving and high yield technical system of “four suitable and one ration”, the yield was increased by 31.6%, the water use efficiency was raised by 31.4% and 23.9% of water could be saved. Under the water saving and high profit technical system of alternate strip planting millet with soybean, the set income was increased by 41.0%, economic effect of water use was raised by 40.9%, and the efficiency of water saving reached 29.19%.更多还原