摘要
1996年至 1997年间对西辽河灌区影响覆膜春玉米吨粮田产量的密度、氮肥、磷肥、钾肥用量生产因素综合平衡进行研究表明 :覆膜春玉米亩产吨粮是四项主要生产技术措施综合作用的结果 ,亩产春玉米 10 0 0 kg时 ,主要生产技术中 ,理论密度应控制在 6 0 0 0株左右 ,施用尿素 40～ 5 0 kg,磷二铵 2 2～ 30 kg,硫酸钾 5～ 10 kg。以紧凑大穗型玉米掖单 13为突破口 ,充分发挥良种、地膜、灌水、施肥、农机、病虫防治等生产要素的相互作用效应 ,实现增产技术措施的综合平衡 。
The overall balance of the productive factors of density,the amount of nitrogen,phosphorus and potassum fertilizer application,which influence the yield of spring maize on ton-grain field,had been studied in the irrigated region in Xiliao river duing 1996 to 1997.The results are as follows: It is the result of comprehensive functions of the four main productive techniques that spring maize covered with film attains yield of one ton grain per 666.7m 2.When per 666.7m 2 yield is 1000kg/666.7m 2,among the main productive techniques ,the theoretical density must be controlled 6000 plants or so per 666.7m 2,applying urea 40-50kg,diammonium phosphate 22-30kg,potassium sulfate 5-10kg.Using Yedan 13 as seed,fully take advantage of interactive effects of improved variety of spring maize,covered with film.irrigation,applying fertilizer,farm machines,preserving disease and insect and other productive facilities to realize overall balance of increase -yielding technique methods and to continue high yield.
出处
《内蒙古农业大学学报（自然科学版）》
CAS
2000年第S1期91-93,共3页
Journal of Inner Mongolia Agricultural University(Natural Science Edition)
关键词
吨粮田
技术措施
综合平衡
Ton-grain field
Technique method
Overall balance
