The following countermeasures can be adopted to increase the cotton emergence rate:
Improve the quality of land preparation. Spring-sown cotton shall ensure that the ploughing depth is not less than 25 cm, ploughing is even, and the surface is level after ploughing.
The upper part is empty and the lower part is solid. There is no light or dark stubble or stubble. Those who use mulch for cotton planting for a long time should pick up the residual film while preparing the ground to provide a good environment for seed growth and improve the emergence rate.
Selection of high-quality seeds In the selection of varieties, not only should the selection be good, but also high-quality varieties. Only high-quality seeds can guarantee the germination rate and increase the emergence rate.
Improve sowing quality. Generally, open-field spring sowing in mid-to-late April is the most suitable time, and mulched cotton can be advanced to early April, requiring suitable moisture sowing, and the sowing depth is about 3 cm.
Pay close attention to weather changes and prepare for disaster prevention and mitigation, and strive to minimize the losses caused by natural disasters.
Prevention and Control of Diseases and Pests Cotton seedling diseases mainly include root diseases and leaf diseases. Root diseases at seedling stage mainly include wilt, anthracnose, red rot and so on. Leaf diseases at the seedling stage mainly include black spot, stem blight, and angular leaf spot.
The main pests in the cotton seedling stage are cotton aphid, thrips, cutworms, red spiders, stink bugs and so on. Diseases can be sprayed with 50% carbendazim wettable powder 500~800 times solution, or 70% thiophanate 800~1000 times solution, or 65% dysenzine 500~800 times solution, spray once every 1 week for a total of 2 ~3 times.
Cotton aphids and red spiders can be controlled with 50% anti-aphid wettable powder 1000 times or 10% imidacloprid 3000 times.
Control cutworms can be controlled by trapping and spraying 50% phoxim 1500 times solution.
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