摘要
本文根据四年的试验结果,分析了棉花同一密度不同行株距配置与产量关系的基本规律。结果表明,不同行株距处理的产量位次、产量积累进程、产量结构及霜前花率均因当年5～10月份日照时数的多少而有差异。在土壤肥力较高的灌溉棉田,每公顷45000～60000株的密度条件下,高日照年份以中等行距(0.7m)产量最高;低日照年份以宽行距(1m)产量最高;中、少日照年份产量差异不明显。窄行距(0.4m)只有在高日照年份的产量稍高于宽行距,但仍低于中行距。根据上述结果初步提出,在常年5～10月份日照时数为1600h 的地区,采用中等行距比较稳产;在日照时数为1300h 左右的地区,采用宽行距比较稳产;在日照时数为1450h 左右的地区,采用中等行距与宽行距均较稳产。
This paper reports the results of four years field experiments,in which the relationship between cotton yield and the differentarrangements of the row and inter-plant space under the same plantingdensity was analyzed.The results showed that the yield order,the courseof yield accumulation,the constitution of yield and the rate of unginned cottonharvested before frost mainly depended on the sunshine time from May toOctober in the year.On the irrgated fields with higher fertility,where theplanting densities were 45,000-60,000 plants/hectare,the highest yield inaboundant sunshine years came from medium row distance(0.7m).In theyears of less sunshine,the highest yield came from wide row distance(1m).However,in the years of medium or less sunshine the yieldsfrom various row spaces were not different significantly.Under thecondition of narrow row planting(0.4m),The yield was slightly higherthan that underwide row planting only in aboundant sunshine years.The following space arrangements are suggested based on the abovementioned results In the area where total sunshine time from May toOctober is 1600 hrs,applying medium row planting will give high andstable yields.In the area of sunshine time around 1300 hrs,applying widerow planting will give more steady yield,whereas in the area of sunshinetime around 1450 hrs,either medium or wide row planting will givereasonable yields.
出处
《河北农业大学学报》
CAS
CSCD
北大核心
1993年第3期37-41,共5页
Journal of Hebei Agricultural University
关键词
棉花
行株距
产量
密度
cotton
row and inter-plant spacing
yield
planting density
sunshine time
