Rice planting is the first seedling. In Xiaobian's view, if you want rice to turn quickly, then seedling management is very important, because you should pay attention to the temperature, water, fertility, etc., and growers should not underestimate these common The management process is flawed, and small details determine the yield of rice cultivation.

I think many growers think that the rice yield factor is the variety. It is important to choose the right variety, but it is not the only factor that determines rice yield. Seedling management and field management are also very important. The following is a detailed introduction.

First, seedling cultivation techniques

(1) Seed treatment:

1. 2 to 3 days before sowing seeds, dry the seeds, spread them to a thickness of 3 to 5 cm, and turn them several times a day to ensure that the seeds are evenly dried. Ensure seed germination rate.

2, the selection of seeds through the selection of seeds to pick up large and mature seeds. It can be carried out by two methods: salt water selection and yellow mud water selection.

3, soaking seeds and disinfection to disinfect the selected seeds, which can reduce the probability of disease in rice seedlings.

4, germination and germination are uneven, related to temperature. The seed germination was the fastest and the best in rice at 32 °C. Therefore, it is necessary to control the nursery temperature. After the seeds are soaked, they are allowed to pass through water at 47-48 ° C, and then kept at a constant temperature of 32 ° C.

(2) Environmental conditions

Pay attention to the weather forecast and start seedling when the local temperature is kept at 5-6 °C. Moreover, in the seedlings, the seedlings should be poured through the water, and the sowing should be as uniform as possible. This will ensure the success rate of nursery.

At the time of seedling management, we must pay attention to the coordination of oxygen, water and temperature. Otherwise, the temperature is too high to grow weak seedlings, low temperature and lack of water to grow small old seedlings, and the temperature rises and falls, causing dead blight to cause dead seedlings.

1, the temperature conditions after sowing to the emergence of a week, the weather is relatively cool. Large and medium-sized sheds are mainly sealed and insulated, so be careful not to enter or exit with a cool breeze.

2, moisture management to extend the first and second watering time as much as possible, that is, after the seedlings come out, do not water first, and then water the first time when the seedbed soil is hard to touch. After pouring, water the water when the bed is very dry.

3, ventilation and smelting seedlings seedlings one and a half leaves began to ventilate refining, seedlings prevent long. Generally, as the seedlings get bigger and the weather gets warmer, the ventilation time is gradually extended and the vents are enlarged.

4, seedling disease prevention in the seedlings from one and a half leaves to two half leaves is an important time to prevent the disease of the disease, to focus on prevention of dryness, blight.

5, seedling stage fertilization of rice after 2 and a half leaves is easy to lack of fertilizer, seedlings lack of fertilizer leaves will generally be yellower not so green, then pay attention to fertilization once, 10 grams of urea / per square meter. The grafting fertilizer should be chased about 5 days before transplanting, and 5-10 g of urea or 50-100 g of ammonium sulfate per square meter.

Second, field management

1. Fertilization and fertilization should be combined with manure and chemical fertilizers. The combination of topdressing and foliar spray fertilizer should be applied with less nitrogen fertilizer and more phosphorus and potassium fertilizer. Nitrogen fertilizer should be applied early and applied several times. See the seedling situation and fertilize. Do not apply too much at one time. In the middle and late stages, if there is cold weather, foliar fertilizer such as potassium dihydrogen phosphate or Yunda 120 can be sprayed on the foliar surface to promote fertility and improve the cold resistance of the rice plant.

(1) The fertilizer is divided into two fertilizers. For the first time, the fertilizer is applied half of the total amount of manure immediately after returning to green, and no more than 6 leaves at the latest, which promotes the tiller to be issued early and quickly; when the 7th to 8th leaves of rice are exposed, use The remaining manure is used as a regulating fertilizer, which is the second time.

(2) When the ear of the ear is 10 leaves, the young ear begins to differentiate and the panicle fertilizer is applied. The ear fertilizer is applied twice. For the first time, the application of panicle fertilizer when the inverted 3 leaves just grow can promote the differentiation of the ear, the branch, and the number of spikelets, increase the number of branches and fight for the big spikes; the second time, apply the remaining panicles when the flag leaves are exposed.

2. Water-saving irrigation water layer management should meet the requirements of “strengthening roots, warming, ventilation, water saving” and other fertility promotion.

(1) Shallow water promotion: When transplanting rice, the flower water is kept in the pond. After transplanting, the water layer should maintain 2/3 of the height of the seedlings, and the seedlings should be returned to green. After returning to green, the water layer should be kept 3.3cm, which can increase the water temperature and promote multi-pointing. After the 10 leaf period, the dry and wet wet irrigation method is to stop the water after pouring the water, and then let the water dry before releasing the water. Up to 40 days before heading;

(2) Roasting the field and attacking the big ear: When the number of stems in the field reaches 80% of the number of stems to be used, it is necessary to develop a plot that is too prosperous, has a late closure, leaves black, leaves under the leaves, and does not appear joint yellow. The water is removed from the field for 7 to 10 days. On the contrary, it is not dried and changed to deep flooding.

(3) Deep water tire protection and shallow water grouting. When the weather forecast has a low temperature below 17 °C, pour 15 to 20 cm of deep water to protect the fetus. The rest of the time should be dry, wet, wet and wet-based intermittent irrigation to make the green pole mature. Each time the water is 4 to 5 cm, it is naturally dried and then watered. Stop water during the yellow ripening period.

In addition to good variety selection, rice is mainly in the field management. Doing well in field management, your rice production will certainly not be less. The above is a detailed high-yield cultivation method for rice. Let's take a quick look.

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