Main points of rice seedling management methods in May
After the summer, the rain increased, and for rice, the early rice transplanting was completed. Now it is in the management period of Daejeon. At this time, Daejeon enters the management period. We should do a good job of topdressing and water management to promote the rapid development of more tillers and pests. Prevention and treatment. How to do it specifically? Let's take a look at it below.
1. Strengthen water management
In order to make the seedlings turn green quickly after rice transplanting, the seedlings that have just been moved soon, the new roots of the seedlings are not long, and the water absorption and fertilizer absorption capacity is weak. It is necessary to promote the rooting and protecting seedlings through reasonable water management. After rice transplanting, the water layer should be kept at 2-3 cm, which is conducive to survival, and the greening period is generally 5-8 days.
The field entering the tillering stage requires a large amount of water and oxygen. The shallow water layer should be kept. It can not only increase the oxygen content, but also increase the soil water content. It can also increase the water temperature, strengthen nutrient decomposition, promote root growth, and robust plants. 1-2 cm is preferred.
2, timely application of tiller
5-7 days after planting, the application of tillering fertilizer, the main fertilizer is urea, adding 250 grams of silicon-zinc fertilizer, promoting early rice early rapid development, quickly set up a high-yield seedling rack, and strive to have a good harvest this morning.
3, timely prevention of pests and diseases
In mid-April, the temperature is high and low, and the temperature is low. In order to ensure the growth of rice seedlings, it is necessary to prevent the occurrence of acute nursery. The number of surviving bases in the winter after the second year of wintering has increased to a different extent than in the previous year. The rice areas with small area of ​​early rice are more likely to be concentrated and aggravated. If not treated in time, it will cause serious damage to the growth of early rice tillers.
For early planting and direct seeding, in the middle of May, the rate of the sheath is up to 8% (or the rate of the sheath is up to 3%) for the whole field control, and the field below 8% can pick the dead sheath group. After 7 days, the drug will be used again; late planting should be carried out in the late May.
Controlling aphid agents: avermectin, triazophos, profenofos, methoxyfenozide, Avi beetle and other agents.
Control of spider mites: tricyclazole, indole, pyraclostrobin and other agents.
The agent for controlling the sheath blight: a drug such as difenophene, propiconazole, jinggangmycin, thiafuramide or the like.
In addition, when we are fighting drugs, it is best to keep the diving layer in the field. If it rains within 6 hours after the medicine, it is necessary to make up the fight and add some foliar fertilizer to the field with poor growth. There is a lot of rain in May, and a pack of silicone can be added per barrel of water when applying.
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