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风沙半干旱区 (阜新 )年平均降水 42 3mm。各月降水分布不均 ,70 %集中在 7～ 8月份。该区的土壤水分在 0～ 10 0cm垂直范围内呈规律性变化 ,在时空分布上呈季节性变化 ;旱灾发生频率达到 70 %以上。针对以上特点 ,我们提出了玉米高产抗旱栽培 6项技术措施 :(1)筛选高产品种 ;(2 )选择适宜的播期 ;(3)合理的种植密度 ;(4 )合理的施肥方式及施肥量 ;(5 )合理的耕作技术 ;(6 )地膜覆盖技术。从而充分利用了自然降水 ,保证了玉米需水高峰与自然降水同步 ,实现抗旱增产的目的
Aeolian sand semi-arid (Fuxin) average annual rainfall of 42 3mm. The monthly precipitation is unevenly distributed, with 70% concentrated in July-August. Soil moisture in this area varies regularly in the vertical range from 0 to 100 cm, with a seasonal change in the spatial and temporal distribution. The frequency of drought is above 70%. In view of the above characteristics, we put forward six technical measures for high-yielding drought-resistant maize cultivation: (1) screening high-yielding varieties; (2) selecting suitable sowing dates; (3) reasonable planting density; (4) ; (5) reasonable farming techniques; (6) plastic film mulching techniques. Thus making full use of the natural precipitation, to ensure that the peak water demand of corn is synchronized with that of natural precipitation, so as to achieve the purpose of increasing drought-resistant yield