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一、液氨直接作基肥、追肥及随灌溉水冲施的效果1987年,新疆石河子农业科技中心对玉米进行了液氨不同施用期的肥效试验.小区试验作物为地膜玉米,分五个处理,重复四次.施肥量除对照区外均以20公斤纯氮施人,即液氮总用量每亩24.3公斤.施肥深度,基肥浅施区为7.5厘米,其余均为15厘米.结果表明,在玉米的不同生育时期施用液氨都有增产效果.各处理单产为670.3—759.3公斤/亩,
First, liquid ammonia directly as a base fertilizer, topdressing and irrigation with irrigation effect 1987, Xinjiang Shihezi Agricultural Science and Technology Center of corn liquid ammonia at different application periods of fertilizer efficiency test.Cell-based plot of crop corn, divided into five treatment, Repeated four times.The amount of fertilizer in addition to the control area were 20 kg of pure nitrogen application, the total amount of liquid nitrogen per acre 24.3 kg depth of fertilizer, basal application area of shallow 7.5 cm, the rest were 15 cm.The results showed that in the The application of liquid ammonia in different growth stages of corn has the effect of increasing yield. The yield of each treatment is 670.3-759.3 kg / mu,