The latest course of cultivation techniques of Zizania caduciflora in cold water

Cold water Zizania latifolia is a kind of Zizania caduciflora harvested by cold water irrigation in the process of cultivation. Cultivating Zizania caduciflora in this way is beneficial to the growth and pregnancy of Zizania caduciflora, and the varieties of Zizania caduciflora are excellent. Let's take a look at the cultivation techniques of cold water Zizania caduciflora with the editor.

1. Land selection and preparation

For the cultivation of Zizania caduciflora in cold water, it is suitable to choose the farmland irrigated by reservoir cold water and plant it in succession, requiring the storage capacity of the reservoir to reach more than 20 million cubic meters. Only when the water source is sufficient, the cooling effect is good. Ploughing in Zizania caduciflora field is to apply 2500-3000 kg of rotten organic fertilizer per mu, if organic fertilizer can be guaranteed to match with chemical fertilizer, then irrigate and rake the surface of the field.

2. Fertilization

Because of the short growth period, Zizania caduciflora should be re-applied base fertilizer, early topdressing, half of base fertilizer and half of topdressing fertilizer. In addition to sufficient organic fertilizer, calcium superphosphate and ammonium bicarbonate should be applied to 50 kg per mu. The tiller-promoting fertilizer was applied 7-10 days after planting, generally 10-15 kg urea per mu, and then, depending on the plant growth of Zizania caduciflora, quick-acting nitrogen fertilizer was applied every 25 days, 10-20 kg urea per mu until the end of July. If the fertilizer is not applied properly or too much available nitrogen fertilizer is applied, it is easy to cause overgrowth, increase tillers and postpone pregnancy, so Zizania caduciflora in cold water is generally not fertilized.

3. Water management

Cold water Zizania caduciflora irrigation is generally shallow-deep-shallow principle, after planting, only need to keep the water layer 3-5 cm before tillering, in order to increase the ground temperature and promote rooting and tillering. Deepen the water level to 12-15 cm after June, and change the water frequently to lower the water temperature and prevent the soil from lack of oxygen. After entering the pregnant stage, the water layer should be deepened to 15-18 cm, but not more than 2/3 of the pseudo-stem, so as not to elongate the moss tube. in the later stage of pregnancy, the water layer should be lowered to about 3-5 cm to facilitate harvest, and then maintain the shallow water layer or moist state to survive the winter, but not dry.

4. prevention and control of diseases and insect pests

The main diseases in the growing period of Zizania latifolia in cold water are rust and flax spot, which can be sprayed at the initial stage. Zizania latifolia rust can be sprayed with triadimefon for 1-2 times, and tricyclazole powder can be sprayed for 7-10 days in an interval of 7-10 days. The main pests are Chilo suppressalis, Chilo suppressalis, evergreen planthopper, whitefly, black-tailed leafhopper and so on.

The above is the introduction of the cultivation techniques of Zizania caduciflora in cold water. I hope it can help you. If you want to know more about it, please follow us.