有机无机复混肥对旱地作物水分利用效率的影响

Effect of organic-inorganic fertilizers on the water use efficiency of crops in dry land

农业废弃物进行无害化处理和肥料化资源利用后,获得有机无机复混肥,为了明确有机无机复混肥在旱地作物上的施用效果,2000～2002年在陕西渭北旱地夏玉米、冬小麦上进行了田间试验。结果表明,有机无机复混肥可以改善夏玉米、冬小麦产量结构,提高夏玉米产量874.5～1144.5kg/hm2,冬小麦产量756.0～901.5kg/hm2,提高夏玉米水分利用效率2.784～3.399kg/(mm·hm2),冬小麦水分利用效率1.311～1.695kg/(mm·hm2)。在旱地可以通过施用有机无机复混肥提高作物产量和水分利用效率。

After agricultural wastes are decomposed by microorganism, they become harmless to environment, and can be processed into organic-inorganic fertilizers. In order to study the effect of organic-inorganic fertilizers to crops in dry land, the field experiment was carried out with summer maize and winter wheat from 2000 to 2002 in Weibei highland in Shaanxi province. The results showed that the organic-inorganic fertilizers could ameliorate the yield composition of summer maize and winter wheat. Therefore, the yield of maiand wheat was increased by 874.5～1144.5 kg/hm^2 and 756.0～901.5 kg/hm^2 respectively, and the water use efficiency of maize and wheat was increased by 2.784～3.399 kg/(mm·hm^2) and 1.311～1.695 kg/(mm·hm^2) respectively. It was concluded that the yield and water use efficiency of crops could be improved in dry land by applying the organic-inorganic fertilizers.