广西旱地晚花生增产技术研究

不同播期、密度、土壤含水量与旱地晚花生产量的关系试验结果表明：早播能缩短生育期，减轻秋旱对花生生育的影响，提高花生从花针期起的叶面积指数和干物质积累量，增加结荚数和果重，比晚播增产率达７３．８％～１７６．７％，达到显著水平。种植密度从目前广西大面积生产上每ｍ２下种３０粒扩大到３８粒，对花生也有一定的增产作用。其主要原因是扩大了绿叶面积指数，提高了群体的净同化总量和干物质积累量，增加总结果数和总饱果数。选择低地种植，可容纳较多的雨水，保水抗旱，增产作用较明显。

STUDIES ON THE TECHNIQUES FOR INCREASING LATE PEANUT YIELD IN UPLAND OF GUANGXI

The experiments with different sowing dates,densities and soil moisture show that early sowing can shorten the growth duration of late peanut,and lighten the effect of autumn drought stress on the peanut plants, and increase the leaf area index and dry matter accumulation since flowering, and produce more pods and a higher pod weight, resulting in a highly significantly increase of yield which is 73. 8%-176.7% higher thanthat sowing late.Increasing the seeding rate from 30 seeds m-2, which is usually used in the production,to 38 seeds m-2 produce a higher yield, because of the increases in leaf area index, in net assimilation and dry matter accumulation in the population, and in both total and fUll pods.Planting in lower upland is good for increasing late peanut yield, because lower upland can store more precipitation for resisting drought.