How to manage cabbage fields in hot and dry weather?

At present, the daytime temperature is still relatively high, and the sunshine time is long. We should also pay attention to the long sunshine time and the rapid evaporation of soil moisture, which is not conducive to the germination of Chinese cabbage seeds and the growth of Chinese cabbage seedlings. Therefore, before sowing, we should give enough water to the soil and pay attention to the water needed for the later growth of Chinese cabbage. You can water here according to the humidity of the soil. Generally, at 4 ~ 5 pm, the soil temperature has cooled, and watering is about to start. Before germination or when there are no saplings, it is best to moisten the soil. After growing into a big sapling, it is appropriate to be semi-dry and semi-wet. It is not advisable to cover the quilt with straw when planting the whole plot. However, for cabbage fields with obvious row spacing, straw can be laid on the blank row spacing of cabbage. Straw mulching can not only reduce soil temperature, but also lock soil moisture well to prevent soil moisture from losing too fast.

It is suggested that when planting again, it is best to look at the weather and temperature trend for a week before choosing the temperature range suitable for the growth of Chinese cabbage. Moreover, some times are suggested to be in the morning and afternoon. When Chinese cabbage germinates, it needs to be watered effectively and timely. The first watering time is the same as the planting time, preferably in the morning and evening. My hometown in rural Gansu often talks about the importance of watering. As the saying goes, "Three times water germinates, five times Chinese cabbage takes shape". The best frequency of water supply is once a week. Cabbage grown in the open field is usually grown in Ying Ji. After management and collection, sow the Chinese cabbage seeds, and cover them with black shade, with a shading degree of about 70%, which can not only block the sun, but also transmit light, and will not make the Chinese cabbage seedlings yellow because of matte.

Choose heat-resistant or moisture-proof varieties. Grasping the sowing date scientifically, it is best to control germination at night or at night. It is best not to let the seeds be destroyed by high temperature as soon as they are unearthed. The stunt of frequent watering in hot and dry years, pay attention to watering before and after sowing. In particular, the rehydration should be properly cooled in time, and the temperature should be lowered in time to maintain soil moisture. If necessary, pour the third and fourth cups of water to maintain proper soil moisture. Standardized soil is prone to water shortage, so special attention should be paid to strengthening water management at seedling stage. Chinese cabbage seedlings are "squatting seedlings" by properly regulating water, inhibiting growth and exercising their ability to adapt to drought. Before transplanting, wait for it to wither properly before planting, which is called "planting seedlings". Through the above treatment, Chinese cabbage has developed root system, strong self-restraint, high chlorophyll content, more dry matter accumulation and strong stress resistance.

Cabbage adapts to hot and dry weather. As long as you do this, there won't be much problem. Cabbage is a rare tree crop, so in hot weather, the water in the field evaporates faster. If you water it in the morning, it will dry in the afternoon, at least once a day, so it is best to water it in the afternoon. It's best to keep out the sun. This can reduce the divergence of water. The net is usually covered at 9 am and exposed after 4 pm. In autumn, the pests that harm Chinese cabbage seedlings run away from the scarab, not the Huang Ge bird. Although this kind of insect is not small, if it is injured, it will cause devastating losses and reproduce very fast. First you eat a lot of holes in the leaves, then you don't eat the whole leaves, only the veins are left, and finally the plants die. Prevention methods From the perspective of the existence of insects, as long as mites or these points are done, there is no need to worry about not growing good cabbage.