Effects of plastic-film mulching and nitrogen application on forage-oriented maize in the agriculture-animal husbandry ecotone in North China

摘要: To counter the actual problems of forage shortage and low quality existing in agriculture-animal husbandry ecotone North China, a research was conducted to study effects plastic-film mulching nitrogen application on production forageoriented maize with aim producing water-saving high-yield good quality. Field experiments combined laboratory experimental estimation analysis adopted. Plastic-film increased dry biomass forage-oriented by 23.8% effectively improving maize’s absorption so that apparent utilization ratio output-input were enhanced. The content crude protein plant thus, nutritive improved. remodeled field water consumption scheduling pattern use efficiency over 10%. Nitrogen co-improved matter (percentage yield) several times biomass. 36.1%–39.5% it contents fat 109% 145%, respectively. yields two matters 160% 210%. at rate about 200 kg·hm−2 uncovered less than 300 film considered as most proper rates guarantee high yield keep available balanced soil. fertilizer an effective way quality, relieving animal accelerating ecological recovery economic development this China.