Cultivation techniques:

1 Selection of sowing: Winter wheat intercropping with spinach, the number of watering is more, the amount of vegetable production varies with the level of water and fertilizer. Therefore, the base fertilizer should be sufficient, the lyrical condition should be good when planting, and the amount of wheat should be sown according to the conventional seed amount. The sowing amount of spinach is generally 0.5 to 1 kg per 667 square meters. The thorny varieties of cold-leaved and leafy leaves are used, such as Shandong Zhucheng spinach, Shenyang spinach, Tangshan beef tongue, and pig ears. Wheat is more resistant to varieties with stronger fertilizer and water.

2 Fertilizer management: Before winter, wheat and spinach are poured with frozen water, and combined with watering, about 5 kg of urea per 667 square meters of spinach is used to enhance the anti-freezing ability and promote its early return to green. In the cold winter wheat producing areas, you should also sprinkle a layer of grass ash or horse manure on the spinach clams after pouring the frozen water to make it safe for winter. Once the winter is over, the soil is slightly frozen, and the spinach can be revived. At this time, it is necessary to pour back the green water, and the amount of spinach that is poured back into the green water is about one time higher than that of the spinach that is not poured back into the green water. The north of the latitude of 37 degrees is watered in the middle and late April, combined with watering, 3 to 5 kilograms of urea per 667 square meters, or 5 kilograms of compound fertilizer such as diammonium phosphate.

3 Harvest spinach as early as possible: Generally, the wheat is harvested in the early stage, and the late harvest is not conducive to high yield of wheat. Therefore, the harvest period of spinach should be early and not too late. The north of the latitude of 37 degrees north of the region generally begins to harvest when the spinach grows to 6 to 7 leaves in the spring, and the method of thinning and seedling harvesting can be adopted, that is, the seedlings are kept in the spinach row, and the wheat seedlings are harvested in the early stage. Don't wait for the spinach to grow long enough to collect. In order to make the spinach in the morning market, the cultivation of spinach can be carried out by mulching to improve the yield of spinach and shorten the symbiotic period of wheat. According to the test, the spinach film cover can be listed for about 10 days or longer in advance, and can be fully harvested before the wheat is raised, and can increase the production of spinach 110-170 kg. Covering the filming time, it is better to reduce the average temperature before winter to 2 °C, and to release the film in the spring of the next year.

(Nanman)