Autumn is the period of cabbage, when there are many plant In earlier areas, Chinese cabbage has already sprouted, but if we want to manage Chinese cabbage well and make it high-yield, it is very important to water and fertilize. Water and fertilizer should be carried out according to different requirements of plants in each growing period, so as to achieve high yield, how to water and fertilize autumn cabbage? Let's have a look.
1. Germination period
There is little water needed in the germination period of Chinese cabbage, but the temperature is high and the soil evaporates quickly. If the seedlings are watered with one water after sowing, the soil will harden easily if it is watered again. At this time, it is better to water before sowing or just after sowing. Generally, fertilization is not needed in the germination period, so as to avoid adverse germination of seeds and even lead to non germination of seeds.
2. Seedling stage
The root system of Chinese cabbage seedlings is shallow, the growth rate is very small, but the growth rate is fast, so it should be watered once in a timely manner to supplement water, and the water should be watered according to the rain situation. In case of serious diseases and insect pests, appropriate watering times should be carried out to make the seedlings grow slowly, and the soil moisture temperature should be kept within a certain period of time to avoid serious diseases and insect pests. In the seedling stage, fertilizer should be applied twice. For the first time, 8-10 kg ammonium sulfate was applied to both sides of the seedling at the growth stage of 3-4 true leaves. After fertilization, the fertilizer should be watered in time. In the second stage, about 15 kg ammonium sulfate was applied in the furrow on both sides of the Chinese cabbage ridge.
3. Rosette stage
The growth and growth rate of Chinese cabbage in the rosette stage are extremely fast. At this time, it is necessary to ensure sufficient water to make it grow vigorously. Generally, it is necessary to water the cabbage immediately after topdressing. It is better to water the cabbage when the soil is dry, so as to avoid excessive growth caused by watering. At this time, fertilization is still in the Chinese cabbage ridge both sides of the furrow fertilization, the general application of high calcium phosphate 10 kg, ammonium sulfate 20 kg per mu, and soil and water.
4. Heading period
Chinese cabbage has a long heading time, which is an important period for the formation of high-quality cabbage. Therefore, the demand for fertilizer and water is large. Before the beginning of wrapping, the cabbage should be watered twice, and then every 5-6 days. It should be noted that the soil should always be kept moist during the heading period, and the watering should be stopped 5-7 days before harvest, so as to avoid excessive moisture in leaves and intolerance to storage. In the middle stage, 15 kg of ammonium sulfate can be applied once with water.
The above is the introduction of how to water and fertilize autumn cabbage. I hope it can help you. If you want to know more about it, please pay attention to our encyclopedia Planting net 。