在半干旱黄土丘陵沟壑区，为了充分利用有限的降水资源提高农作物产量，在旱作梯田地采用微集水种植与常规平作2种种植方式进行田间对比试验，研究了玉米的出苗率及籽粒产量变化情况。结果表明，微集流单行种植与平作对照区玉米籽粒产量存在极显著差异，平均比对照区提高了28．26％；微集流双行种植与平作对照区玉米籽粒产量存在显著差异，平均比平作对照区提高了19．99％；不同种植方式下玉米籽粒产量随种植密度的增加呈先增加后降低趋势，种植密度为4．8万株/hm2时产量较高。由此可知，微集流种植能够有效提高旱作梯田农作物的产量。%In order to make best use of limited rainfall resource and improve crop yield ,a field con-trast experiment with two different planting patterns was carried out to study the effects of rain-harvesting planting on seeding rate and grain yield in arid terrace in semi arid loess hilly region . The results showed that ,there was difference in maze yield at the 1% significant level between single line planting flat and control flat ,and at the 5% significant level between double lines at one width ridge planting flat and control flat .The technology enhanced maize grain yield by 28.26% and 19.99% ,respectively compared with control flat .Meanwhile ,the grain yield showed an increasing trend with the increased planting density before the planting density reached a cer-tain value (4.8 × 104 seedlings per hectare) .It was concluded that the micro-harvesting tillage methods could efficiently improve the yield of crop .
展开▼
