How to fertilize stem mustard properly? Detailed planting techniques
How to fertilize stem mustard properly? Is there anything to watch out for? Experienced netizens, please help explain the method. Stem mustard (zha cai, Sichuan pickled mustard tuber) is a very good crop for winter agricultural production, but in production it has been found that once farmers transplant it, if they do not pay attention to later topdressing, it leads to low yields. Generally speaking, producing 1000...
How to fertilize stem mustard properly? Is there anything to watch out for? Experienced netizens, please help explain the methodStem mustard (zha cai, Sichuan pickled mustard tuber) is a very good crop for winter agricultural production, but in production it has been found that once farmers transplant it, if they do not pay attention to later topdressing, it leads to low yields. Generally speaking, producing 1000 kg of fresh stem tuber requires the absorption of 5.4 kg of nitrogen, 1.4 kg of phosphorus, and 5.6 kg of potassium. To produce 3000 g of fresh stem tuber, about 16.2 kg of nitrogen, 4.2 kg of phosphorus, and 16.8 kg of potassium need to be absorbed. The required ratio of nitrogen, phosphorus, and potassium is 1:0.26:1.04.
The period of vigorous nitrogen absorption for stem tuber mustard is from the 13th to 18th leaf stage. Phosphorus is absorbed the most during the whole growth period from the 14th to 18th leaf stage, and the period of vigorous potassium absorption is from the 13th to 19th leaf stage. The pattern of nitrogen, phosphorus, and potassium absorption by stem tuber mustard differs considerably among different production areas due to differences in climatic conditions, growing seasons, and so on. Fertilization of stem tuber mustard can be divided into base fertilizer and topdressing.
Base fertilizer is generally applied at 2000-3000 kg of decomposed organic fertilizer per mu or 60 kg of 45% compound fertilizer, spread and then plowed and harrowed into the soil, after which beds are made and transplanting is done.
Topdressing: stem mustard should be topdressed according to different cultivation conditions and the growth characteristics of stems and leaves. Nitrogen fertilizer is the main type, generally 25-30 kg of nitrogen per mu. It is applied in 3 split applications.
The first application is made after transplanting and survival when the plants enter the 8-leaf stage (before December 15). At this time the temperature is relatively high. The leaves grow quickly, and only timely topdressing can form the first leaf ring and lay the foundation for stem swelling. Generally, 1500-1750 kg of concentrated manure fertilizer per mu, or 4-5 kg of urea, is applied with 1000 kg of water.
The second topdressing is carried out at the 13-leaf stage (mid-January to early February). At this time both stems and leaves grow very quickly. Generally, 25 kg of ammonium bicarbonate, 20 kg of superphosphate, and 5 kg of potassium chloride per mu are applied with 1500 kg of water.
The third topdressing is carried out at the 15-leaf stage (late February). Per mu, 25 kg of urea plus 12.5 kg of potassium chloride are applied with water. Never broadcast it or apply nitrogen fertilizer alone. After 7 days, apply another topdressing according to growth conditions. Stop topdressing one month before harvest to prevent excessively fast growth and hollowing.
Click to get more mustard growing techniques
Click to get more vegetable growing techniques