How to grow rice seedlings? Detailed explanation of key technical points
Rice is one of the main food crops in our country, especially in the southern regions of our country. Generally after the Start of Spring, most regions begin preparing for rice seedling cultivation. So when growing rice seedlings, how can we achieve a higher emergence rate? Better growth? Stronger resistance? Below are several key points of rice seedling cultivation technology that everyone must master when growing seedlings. Let's take a look together.
1. Seed treatment
Before growing rice seedlings, seed treatment is needed, as this can increase the germination rate of the seeds and thereby improve the emergence rate of rice seeds. First, the seeds need to be sun-dried; then use Baike or prochloraz and cartap hydrochloride mixed with water for seed soaking, with a soaking time of five to six minutes; then soak with imidacloprid wettable powder for two days; finally carry out germination promotion, and when about 80 percent of the rice seeds have sprouted white, they can be sown. This can not only improve the emergence rate of rice but also enhance the rice's resistance to pests and diseases.
2. Water management
Water management during rice seedling cultivation is also quite important. Generally, the seedling field does not need too much water; usually it is enough to soak the seedbed surface through. Next, when the water in the field decreases, watering should be done appropriately, keeping the humidity at its original level. The water in the rice seedling field should not be too much, otherwise it will affect the emergence of rice and also trigger pests and diseases, leading to the death of the seedlings. If growing seedlings on dry land, we should water promptly when removing the film, soaking the soil through to prevent seedling death. At the same time, during this emergence period, reasonable humidity should also be maintained in the seedling field.
3. Fertilization management
Fertilization management for rice seedling cultivation is also divided into two methods: dry field and paddy field. Generally speaking, for dryland seedling cultivation, the nutrient requirement is not very large. Usually when the base fertilizer is sufficient, no additional fertilization is needed later, so as to avoid excessive fertility causing seedling burn. But if the base fertilizer was not handled well and the young seedlings show yellowing leaves, then timely fertilization is needed. For paddy field seedling cultivation, the fertilizer requirement is relatively large. When fertilizing, we usually follow the principle of frequent application of thin fertilizer to prevent seedling burn and promote seedling growth.
4. Pest and disease control
In order to avoid the impact of pests and diseases on the growth of rice seedlings, before sowing it is generally best to broadcast 48% chlorpyrifos emulsifiable concentrate and 35% phoxim microcapsule granules, with amounts of 150 milliliters and 1 kilogram per mu respectively. After sowing, to prevent underground pests from damaging the rice seeds, we also need to scatter an appropriate amount of 40% phoxim emulsifiable concentrate mixed with bait around the seedling field. After the rice seedlings emerge, we mainly need to prevent damping-off disease, bacterial wilt, and leaf-eating pests from harming the seedlings. We can use bensulfuron-methyl middot dichloroquinolinic acid, bensulfuron-methyl middot quinclorac, and imidacloprid wettable powder plus Jun Ke Du Ke for control respectively.
The above are the four key points for everyone when sowing and growing rice seedlings, and they are also the key to rice seedling cultivation. Generally, as long as these points are mastered well, the rice seedlings cultivated will be excellent, and they will also be of great benefit to later field operations. If everyone wants to learn more about rice planting techniques, you can also leave a message for the editor.