On April 19, when I went to Huilong Town, Hanchuan City, to investigate cotton production, a farmer reported to the local seed distributor that he had purchased the nationally-reviewed cotton variety Ezamian No. 10 with low germination rate. On the same day, a seed distributor in Tianmen City reported that they asked the Tianmen City Seed Management Station to determine a cotton variety with good yield and high germination rate of more than 78%. Some farmers said that the germination rate was only 40- 50%. Some farmers also reported that they are currently growing better varieties of cotton and their emergence is not neat. Some of them have emerged better and are more serious. These conditions are very representative in this year's cotton seedling emergence process. Sexuality shows that this year’s cotton seedlings are relatively heavy and the workload for preserving the area covered by the Miaobao is huge. It is even more arduous to seize the cotton harvest for the whole year. For this reason, the grassroots cadres and farmers’ friends in the cotton region must Can not be taken lightly, we must immediately take anti-disaster contingency measures to ensure that the entire cotton seedlings, and strive to strong seedlings early.
First of all, we must correctly analyze the damage of cotton seedlings. In the five days after the Ching Ming this year, the weather was good. The cotton sown at this time was basically emerged in about 10 days. The cotton planted on April 10, after sowing, encountered low temperature and rainy weather for about 6 days. Generally, the emergence of seedlings was stagnant. The cotton sown on 17-18 days suffered heavy rain and increased difficulty in seedling and seedling protection. Among the earlier peasant households, no seedlings were kept and a large number of dead seedlings were started. However, the timely spraying of cotton seedlings grows more normal. According to the research, the effective accumulated temperature from early sowing to emergence requires 80-100°C. Nowadays, more varieties of hybrid insect-resistant cotton are used in production, and most of them are mature earlier, and they are not satisfied after sowing. , generally cannot emerge early. Therefore, the cotton that has not yet emerged cannot identify cotton seed problems. After the accumulated temperature has reached the point where it has not emerged yet, it should also be analyzed in detail because of the height of the seedling rate, the thickness of the seedbed cover, the amount of watering, and the management of seedbeds. The level of refinement is closely related. Do not panic when encountering problems. Make sure to investigate in person and identify the reasons for taking measures.
Second, we must prepare more seedlings to keep ready seedlings. Cotton seedling disasters also occur frequently. Generally every 10 years, dating encounters 3-4 times of low temperature and rainy days during seedling period. To do this, we must continue to do more nutrition and nursery seedlings. This is because, first, the farmers are skilled in producing rice dumplings, with high ergonomics, and the speed of seeding and seedling raising is fast; second, there is still season to be able to catch, sowing and planting seedlings have great room for maneuvering; and thirdly, the cultivation of seedlings is easy to make up the seedlings, and as long as the management is strengthened, balance can be achieved. Increase production. Prepare 300-500 acre per acre, and then leave seedlings according to the condition of seedlings.
Third, we must preserve early seedlings to promote strong seedlings. First, to ensure the safety of existing cotton seedlings, it is necessary to spray medicine to prevent disease and protect the seedlings. Immediately after the forthcoming unripe cotton seedlings are sprayed, the seedlings shall be sprayed and protected immediately; secondly, after the cotton seedlings start to show the true leaves, they shall be quickly top-dressed to raise the seedlings, so that the cotton seedlings will be transplanted with fertilizers, with fertilizers and seedlings; Late cotton seedlings need to be peeled off in order to achieve seedlings. Early sowing cotton seedlings, do not leave the seedlings do not leave the bed; the fourth is transplanting cotton seedlings to be unequal, when the seedlings are not equal. That is, 2-3 true leaves can be transplanted or transplanted at a stable temperature in early May.
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