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本研究探讨了ＤＰＣ、ＫＨ２ＰＯ４、ＤＰＣ＋ＫＨ２ＰＯ４浸种对棉籽活力及棉苗素质的影响。结果表明：ＤＰＣ、ＤＰＣ＋ＫＨ２Ｏ４浸种，可提高棉籽活力及棉苗素质，尤以ＤＰＣ＋ＫＨ２ＰＯ４的效应显著，表现在叶片的叶绿素含量、光合强度提高，增加干物质积累量，改善了棉株的Ｃ、Ｎ营养状况，促进了根系发育，从而使地上部生长稳健、墩壮，降低果枝始节，现蕾期提早，增强抗旱能力。ＫＨ２ＰＯ４浸种有降低棉籽活力指数的效应，对棉苗素质的影响，表现有促进根系发育，提高叶片光合速率，改善Ｃ、Ｎ营养状况的效应，显著提高真叶及嫩茎的Ｎ素营养水平，但提高棉苗素质的效应，不如ＤＰＣ＋ＫＨ２ＰＯ４、ＤＰＣ浸种的大。为此，在生产上可应用１５０～２００×１０￣（－６）（ＰＰｍ）＋１％ＫＨ２ＰＯ４浸种，以提高种子播种品质，促壮苗。生产实践证明也可用１５～２０×１０￣（－６）（ＰＰｍ）ＤＰＣ＋０．２～０．３％ＫＨ２ＰＯ４溶液苗期喷施，大田用水量１０～１５公斤／６６６．７ｍ２（亩）。尤其是麦套棉，棉苗瘦弱迟发，用ＤＰＣ＋ＫＨ２ＰＯ４浸种，会起到显著提高棉苗素质的效果。
This study investigated the DPC, KH2PO4, DPC + KH2PO4 soaking seedling cotton seedling vigor and quality of the impact. The results showed that the soaking of DPC and DPC + KH2O4 could improve cottonseed vigor and cotton seedling quality, especially the effect of DPC + KH2PO4. The results showed that the content of chlorophyll and photosynthesis increased, the accumulation of dry matter increased and C, N nutrition of cotton plant improved Conditions, and promote root development, so that the growth of stubble above the ground, Zhuang Zhuang, reducing fruiting branches, budding earlier, and enhance drought resistance. KH2PO4 seed soaking can reduce the effect of cottonseed vigor index on the quality of cotton seedlings. The effects of promoting seedling root growth, increasing leaf photosynthetic rate, improving the nutrition status of C and N, improving the N nutrition level of true leaf and stem, But to improve the quality of cotton seedling effect, as DPC + KH2PO4, DPC soaking big. To this end, in the production of 150 ~ 200 × 10 ~ (-6) (PPm) + 1% KH2PO4 soaking can be applied to improve seed sowing quality and promote seedling growth. Production practice proved that 15 ~ 20 × 10 ~ (-6) (PPm) DPC + 0.2 ~ 0.3% KH2PO4 solution can also be sprayed at the seedling stage, field water consumption is 10 ~ 15 kg / 666.7m2 (mu). Especially the wheat cotton, thin and late thin cotton seedlings, soaking with DPC + KH2PO4, will play a significant role in improving the quality of cotton seedlings.