The causes and Control measures of the Hollow of the most New Zealand Flowers

The hollow of broccoli means that there are holes in the main stem of broccoli, but there is no rot, which is a common physiological disease in broccoli planting, which mainly occurs in the mature stage of the bulb. At the beginning, there are several small gaps in the main stem, and with the growth and maturity of the plant, these small gaps continue to expand, and finally form a large gap, making it hollow, so what is the reason for its hollowness? Let's take a look at the pro-farm network.

1. Hollow cause

The main results are as follows: 1. The cause of hollowness is mainly caused by improper planting management. when planting, the density is too thin and the nutrients are sufficient, which leads to the plant growing very fast and the hollow probability is high.

2. The soil is too fertile. In order to accelerate the growth and increase the yield, farmers often apply too much nitrogen fertilizer, which leads to the rapid growth of the plant and the hollow.

3. In addition, the lack of water in the growing period will also cause hollow, in the broccoli bulb growth stage, when the demand for water is greater, and if the lack of water or improper watering, the hollow probability is very high.

4. Temperature is also one of the causes of hollowness. Broccoli is a cool vegetable. The suitable temperature for growth is 15-22 degrees. Generally, the temperature exceeds 25 degrees when planting. Photosynthesis and respiration are accelerated, which makes the flower bulb grow too fast, resulting in hollow.

5. In addition, when the plant was boron deficient in the later stage of planting, the old leaves began to fade, and the leaves became thicker and brittle, resulting in tissue degradation in the stem, accompanied by Lignification, resulting in hollow.

6. Variety reasons, different varieties of broccoli have different adaptability to the environment, some are not easy to be hollow, some varieties are easy to hollow, and some varieties are genetic.

II. Prevention and control measures

The main results are as follows: 1. The selection of varieties which are not easy to cause hollow is one of the main means to prevent the hollow of broccoli. In seed selection, it is necessary to select varieties in accordance with local climate and soil. Sowing in time, in order not to miss the best sowing time, the hollow phenomenon caused by temperature in the later stage, careful seedling breeding, planting should not be too wide, should not be too dense, the suitable density is 30-45cm, and the row spacing is about 60-70cm.

2. The plots with good soil permeability and good drainage should be selected when planting, and the amount of fertilizer should be determined according to the variety, soil fertility and growth status. During the growth stage of the cord, less nitrogen fertilizer should be applied, and appropriate phosphorus and potassium fertilizer should be applied. If boron deficiency is found, foliar fertilizer should be sprayed in time to maintain boron element, which has a quick effect and is suitable for topdressing.

The above are the causes and control methods of broccoli hollowness brought by pro-agricultural network. I hope it can help you. If you want to know more about broccoli planting, please pay attention to pro-agricultural network.