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pest agricultural control
释义
pest agricultural control
Encyclopedia
农学
害虫农业防治
释
pest agricultural control
害虫农业防治
基于农业生态系统中害虫-作物及其环境之间的相互作用关系,结合整个农事操作过程中的各种措施,有目的地改造农业系统中某些环境条件,使之不利于害虫发生而有利于农作物的生长发育,从而直接或者间接控制害虫的方法。害虫防治的重要措施。
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reciprocal ideal class
reciprocal induction
reciprocal inhibition
reciprocal integral equations
reciprocal interchange
reciprocal kernels
Reciprocal lattice
reciprocal lattice
reciprocal lattice node
reciprocal-lattice point
reciprocal lattice vector
reciprocal-lattice vector
reciprocal linear dispersion
reciprocal linear representation
reciprocal Lucas constant
reciprocal mapping
reciprocal mass
reciprocal matrix
reciprocal medium
reciprocal multifactorial constant
reciprocal network
reciprocal number
reciprocal operator
reciprocal paper
reciprocal permutation representation
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