Chunfeng is a precocious cowpea variety developed by the Nanjing Institute of Vegetable Science. It is suitable for cultivation in early spring and in spring. This species is full of plants, strong growth potential, dominated by the main vine pods, the first flowering spikes from the second to the third quarter, more than a single plant, high yield in the early stage, not easy to premature failure in the later period; The diameter of 0.8 to 1 cm, single pod weight 30 to 35 grams; green and white, red seeds, flesh thick, crisp, less fiber, sweet taste; more resistant to viral diseases, blight and coal mildew.
Fertilizer soil preparation requirements are not strict, with slightly acidic soil. Choose sandy land that has not been planted with leguminous crops for 2 years. Plant 25 cm deep, 2,000 kg per hectare of organic fertilizer, and 30 kg of compound fertilizer. To be high, 2 meters wide and 35 cm deep.
The sown greenhouses were planted in due course in late February, the small sheds were planted in mid-March, and the open fields were sown in mid-April. Cave sowing, cultivation of large and small rows, 70 cm wide spacing, 40 cm row spacing, 25 cm hole spacing, 4,000 holes per acre, 3 to 4 seeds per hole, 2 kg per acre. After sowing, cover soil, cover film. Immediately after emergence, the membranes were broken and weak seedlings, seedlings, and diseased seedlings were inoculated, leaving 2 to 3 seedlings per hole. The pre-emergence greenhouse temperature is maintained at 20-30°C, and the post-emergence greenhouse temperature is controlled at 25-28°C to keep the soil moist.
The principle of field management of fertilizer and water management is the prevention of premature growth of stems and leaves, and prevention of premature decline in later periods. During the flowering stage, 2 to 3 times fertilization is applied. Each time, the application of compound fertilizer is 10 to 15 kg per acre. Appropriate control of water at the seedling stage, more water for flowering and podling, watering once every 7 days, and watering each time after fertilization. During the growing season, it is drained in time to avoid rot, leaves, and falling flowers. Chunfeng cowpea vines quickly, should be planted when there are 5 to 6 leaves, to "human" shaped frame is appropriate, selected sunny afternoon afternoon vines on the shelves. The main diseases and pests are rust, powdery mildew, leaf spot, root rot, soybean meal, leafminer, aphids, etc., and timely prevention and treatment.
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