近年来,棉花杂交种推广面积增加,经营单位制种面积也随之扩大,其杂交种来源于各繁殖基点,来源于千百个农户的制种。在制种过程中由于杂交种的母本是常规种,往往不抗虫,有一些棉铃由于疏漏没有进行杂交,而是自交,这样在最后收的杂交种子中往往掺杂一些不抗虫的假杂种,因此就必须 In recent years, the popularization area of ​​cotton hybrids has increased, and the area for seed production by business units has also expanded. The hybrids originated from the breeding bases and originated from the seed production of hundreds of peasants. In the process of seed production because the hybrid is the common species of the mother of the mother, often not insect-resistant, some bolls due to negligence did not carry out hybridization, but self-self, so in the final hybrid seeds are often doped with some non-insect-resistant Fake hybrid, so it must