摘要
运用地质统计学中的交叉变差函数方法，研究稻田中褐飞虱和白背飞虱自然混合种群密度的空间分布关系．结果表明：在水稻不同生长发育期，褐飞虱与白背飞虱存在正或负的相关关系，但在水稻生长的个别阶段不同飞虱种群密度的空间关系不明显．褐飞虱与白背飞虱在早稻中多为不相关关系，且方向差异不明显，但在水稻生长的中期，稻飞虱种间不但存在相关范围等于１８ ｍ的正相关关系，而且存在相关范围等于５４ ｍ的负相关关系，两种飞虱在晚稻田中的空间关系多为负相关关系，相关范围等于５４ｍ或更大，且方向差异较明显．
Both brown planthopper and white back planthopper are important pests of rice. The spa- tial interactions between brown planthopper and white back planthopper, in different rice growing sea- sons, were studied using geoetatistical methods. It was shown that the main spatial interactions was no- interaction, but the positive and negative interaction occured in the 1st rice season, and the ranges were 18 m and 54 m. In the 2nd rice season, spatial interaction between brown planthopper and white back planthopper was negative interaction with a range of 54 m, and displayed different interactions with different directions.
出处
《中山大学学报（自然科学版）》
CAS
CSCD
北大核心
2000年第z2期72-77,共6页
Acta Scientiarum Naturalium Universitatis Sunyatseni
基金
国家"九五"攻关资助项目(96-005-01-01-06)
广东省自然科学基金资助项目 (960037)
关键词
褐飞虱
白背飞虱
空间关系
地质统计学
brown planthopper
white back planthopper
geostatistics
spatial interactions
