1. How to carry out water management in Putian?

After the sowing in the early season, the water should be filled with water. Until two days after the film is uncovered, the fine weather will remain full of gutters, while the rainy weather will maintain half a ditch. 5 days before transplanting, drain the sun seedlings. In the meantime, if the soil on the surface is too dry, horse water can be fed once.

After sowing in the late season, it often encounters high temperature and strong sunshine, and the water on the surface of the earthworms evaporates quickly. It is easy to dry the seed just after sowing and affect seedling emergence. Therefore, 2-3 hours after sowing, after the seeds and the soil are closely attached, the surface of the alfalfa should be flooded and the depth of flooding should be maintained at about 3 cm, so as to prevent the water temperature from being burned too much. By about 5 pm, after the intensity of sunshine weakens, the drainage exposes the surface and the oxygen required for seed germination is satisfied. The next day around 8 am, re-irrigation flooded. Repeatedly for 3 days, the root system of the seedlings can be absorbed into the soil to absorb water. After each irrigation, each time the water surface is covered with a thin layer of water, it is allowed to evaporate to dryness until it cracks. After that, the water layer is thinned again and again, alternating between wet and dry until 5 days before transplanting. Sun seedlings. In this case, if the soil is too dry, the water can be fed.

2. How to fertilize transplanting seedlings?

The nitrogen content of rice seedlings was related to their ability to resist injury. The nitrogen fertilizer applied excessively, the seedlings grew green and green, and the ability to resist the injury of the plant was weakened. The mechanical transplanted rice seedlings caused more planting injury to the seedlings than the artificial rice transplanting. Therefore, the cultivation of transplanting seedlings should increase carbonitriding of seedlings and reduce the amount of nitrogen fertilizer, so as to improve the seedlings' resistance to injury. In general, soils with higher fertility do not fertilize. Soil with fertile soil can use basal fertilizer (7.5kg per mu).

3, how to use paclobutrazol to cultivate transplanting seedlings?

The use of paclobutrazol in rice seedlings can make the seedlings dwarf, the tillers increase, the leaves upright, and the roots grow thick and short, thus improving the seedling quality, increasing the seedling resistance to plant injury and increasing the yield. Seedlings transplanted mechanically generally have a higher seeding density, and the planting injury during machine insertion is also much higher than hand insertion. Therefore, the use of paclobutrazol has a more pronounced positive effect. Specific methods of use: In the early season, after the seedlings are uncovered, the seedlings are applied in the late season at the time of one leaf (about 5 days after sowing), the dosage is 175g (25% wettable powder) per acre, and 100kg of water is evenly sprayed. .

4. What are the adverse effects of seedlings transplanting in time and what measures should be taken?

When the growth of rice seedlings reaches a certain level, the contradiction between air and light penetration will intensify, the seedlings will grow high, the quality will be worse, the pests and diseases will be aggravated, and it will affect the planting of green plants and even dead seedlings. Ultimately affect the increase in production. According to the trial of the Jiangsu Academy of Agricultural Sciences, the age of the pods is in the range of 15 to 20 days. The cultivars can be cultivated properly and the yield per mu can exceed 1,000 jin. However, if the quail age is extended for one day, the output will decrease by 1.4%. Therefore, transplanting at the right age is an important factor to ensure the high yield of machine inserted rice.

However, production often encounters delays in the maturation of mature crops, delayed harvesting of rainfall weather, failure of machinery and equipment, etc., resulting in failure to implement transplanting within the planned time. At this point, measures should be taken to control seedling growth. The commonly used measures are: (1) Inhibiting the growth of seedlings by controlling irrigation in paddy fields. (2) Use a pair of scissors to cut off the lice (retain the seedling height 13-15cm). (3) If at the time of sowing, it is considered that there is no assurance that rice transplants will be planted on time, fertilizer application will be controlled in Putian. Fertilizer will not be fertilized during the whole breeding season. In this way, if the seedlings grow to a certain height, they will stop growing.

For pests with severe pests and diseases, it is necessary to spray pesticides in a timely manner so that they can bring drugs to Shimoda.

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