沼液用于无土栽培的营养机理与技术优化

Progress of Biogas Slurry Soilless Culture and Optimization Technology

沼液中含有丰富的氨氮、粗蛋白、粗纤维、粗脂肪等营养成分,富含多种酶类、维生素等有利于作物生长发育的成分,还有大量的常量元素和微量元素,在蔬菜无土栽培方面有很大的优势。为此,对沼液用于无土栽培的营养机理与技术进行了优化。应用沼液无土栽培时,严格控制条件有利于作物产量的提升:EC值应控制在2.0～4.0 ms/cm之间,pH值在5.8～6.5之间,沼液提前沤肥30天,并加入鳌合态铁可以增产3.4%～8.8%。

Biogas slurry is rich in ammonia nitrogen, crude protein, crude fiber, crude fat and other nutrients, rich in a variety of enzymes, vitamins. It can conducive to crop growth and development of components, there are a large number of major elements and advantage in vegetables soil cultivation. The application of biogas slurry soilless cultivation , strict control of conditions conducive to the enhancement of crop yields： EC values control the application of biogas slurry soilless culture between the 2.0 - 4.0ms/cm in, the pH value between 5.8 and 6.5, biogas slurry in advance compost 30d, and join the state of iron can increase the production by 3.4% to 8.8%.