论文部分内容阅读
研究结果明确了模拟棉苗受小地老虎为害造成断苗缺株后,周围棉株有不同程度的补偿作用,主要表现在有效铃的增加和产量的提高,缺1株苗成铃能获得101.85%的补偿;籽棉平均补偿率达87.24%,损失率为12.76%。但自连续缺2株以上,则补偿率下降为50.62%—35.75%,损失率上升为49.37%—64.24%。补偿量和损失量(率)是随缺株数的增加而增长,而补偿率则随缺株数增加而下降,在不同缺株数间的差异达显著或极显著水平。
The results of the study clearly showed that cotton plantlets were compensated to varying degrees after the cotton seedlings were damaged by D. trifoliatus, and the cotton plants around were compensated to some extent with the increase of effective bolls and the increase of yield. % Of the compensation; seed cotton average compensation rate of 87.24%, the loss rate of 12.76%. However, since the continuous lack of more than 2, then the compensation rate dropped to 50.62% -35.75%, the loss rate increased to 49.37% -64.24%. The amount of compensation and loss (rate) increased with the number of deficient plants, while the compensation rate decreased with the number of deficient plants. The difference between different deficient plants was significant or extremely significant.