Can nitrogen fertilizer be used in the late filling stage of Chinese cabbage?

After Chinese cabbage enters the planting period, sufficient water is the key factor to determine the quality of Chinese cabbage. After Chinese cabbage enters the planting period, it is expected that the water consumption will be more than that in the previous period. At this time, it is necessary to keep the soil moist, and it should not be excessively moist, which will affect the normal growth of Chinese cabbage heart. After the Chinese cabbage enters the planting period, the tail number should be irrigated for the first time. Too much will be bad for the growth of Chinese cabbage. After the second watering in the first 4-5 days, keep the habit of watering once every 7 days, and stop watering 7 days before harvesting Chinese cabbage, which is beneficial to the harvest and storage of Chinese cabbage.

Fertilizer is also an important factor in the length of Chinese cabbage. After Chinese cabbage enters the planting period, the vigorous length of leaves needs sufficient fertilizer, so the nutrients needed for Chinese cabbage growth can be supplemented according to the method of water and fertilizer. After Chinese cabbage enters the planting period, it is usually topdressing twice, the first time around the Han and old solar terms, and the second time a few days before the first frost solar terms. After topdressing, nitrogen fertilizer can be used as the main fertilizer. Poor soil fertility can increase the amount of topdressing. Generally, fertilization can be stopped in the late growth stage of Chinese cabbage to prevent the growth of Chinese cabbage. Chinese cabbage belongs to leafy vegetables, which has a high clean vegetable rate and is deeply loved by people. Chinese cabbage should grow vigorously and have thick leaves. Applying nitrogen fertilizer can achieve the goal of rapid growth. This is a common method used by many farmers. If nitrogen fertilizer is applied continuously, other nutrients in the soil will not be supplemented, and the organic matter will decrease year by year, which is not conducive to the high yield of Chinese cabbage.

Too much nitrogen fertilizer in Chinese cabbage affects the absorption of other elements. Chinese cabbage likes nitrogen, but too much nitrogen will affect the absorption and utilization of potassium. Potassium is one of the three elements of nitrogen, phosphorus and potassium, and potassium is not equal to nitrogen fertilizer. Relevant data show that potassium is not an organic compound in plants, but it is related to many metabolic processes in plants. Potassium. The activities of various enzymes in plants, the leaves of Chinese cabbage planted in the soil with sufficient potassium fertilizer are dark green, but the leaves of Chinese cabbage are light green with insufficient potassium and sufficient nitrogen, and the photosynthesis is much stronger than that in the soil with abundant potassium. The absorption and utilization of nitrogen fertilizer and potassium fertilizer are complementary. Potassium supply is insufficient, nitrogen fertilizer is applied more, and white is not easy to use. Especially after applying ammonium salt nitrogen fertilizer, ammonium salt is easy to accumulate in plants, causing damage and reducing storage capacity, and some Chinese cabbages are easy to dry up and be timid.

Chinese cabbage, Baoxin tea and Chinese cabbage with more nitrogen fertilizer grow rapidly after planting. At this time, more nitrogen is needed, which is one of the reasons why our farmers generally collect ether. The ratio of Chinese cabbage to required nitrogen, phosphorus and potassium is about 1:0.6: 1.32. For every Chinese cabbage produced, one ton of Chinese cabbage is produced. It can be seen that Chinese cabbage not only likes nitrogen, but also can exceed the requirement of potassium. When the stubble of Chinese cabbage enters the planting period, excessive nitrogen fertilizer will easily lead to the Chinese cabbage growing longer. No matter what crops appear, they are of high quality and high yield.