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生化混用就是生物农药与化学农药混合使用和交替使用。好处:①发挥生物农药防效期长的优点,补偿化学农药防效期短的缺点。②发挥生物农药害虫不产生抗药性的优点,补偿部分化学农药害虫抗性严重的弱点。③发挥生物农药对人畜无毒害不污染环境的优点,补偿化学农药对部分作物残留量大、污染环境的弱点。④发挥化学农药击倒倒时间短的优点,补偿生物农药击倒时间较长的弱点。 生化混用应掌握的原则:①混用不能有其它化学变化,不能对作物造成药害。②对主要害虫的杀
Biochemical mixing is the use of biological pesticides and chemical pesticides mixed and used interchangeably. Benefits: ① play the advantages of long-term biological pesticide to compensate shortcomings of short chemical control of pesticides. ② play a biological pesticide pest does not produce the advantages of resistance to compensate for some chemical pesticides pest resistance serious weaknesses. ③ play a bio-pesticide non-toxic to humans and animals do not pollute the environment, the advantages of chemical pesticides to compensate for some crop residues, the weak point of environmental pollution. ④ play the chemical pesticide knockdown advantage of a short time to compensate for the biological pesticide knockdown time longer weakness. Principles of biochemical mixing should be mastered: ① mixing can not have other chemical changes, can not cause phytotoxicity to crops. ② kill the main pests