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| Influences of chemical topping agent on growthand yield of cotton Xinluzao 48 |
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| Abstract: |
| Abstract：With Xinluzao 48 as materials，field comparison test of soil tower cotton topping agent was carried out
to study the effects of chemical topping agent on agronomic traits，yield，quality of cotton，to provide a scientific basis
for the popularization and application of chemical topping technology for cotton. Results showed that，in different dosage
of soil tower cotton topping treatment，the plant height，branch number，leaf number were better than those of artificial
topping（CK），and the net rate of topping was more than 80%；The single boll weight increased，ginned cotton weight
and pre frost flower rate had no significant difference with the control（CK），praying 600，750，900 mL/hm2 soil tower
cotton topping agent had yield-increasing effect；100-seed weight，seed index，lint index，fiber length，micronaire
value，uniformity and elongation had no significant difference with the control. The result indicates that tower soil cotton
topping agent can effectively control the plant height，but has no obvious effect on the yield and quality of cotton. |
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