What methods can make cowpeas set more pods?
What methods can make cowpeas set more pods? Please explain the methods. To achieve high yields when growing cowpeas, you need the cowpeas to set more pods; here are several methods that can make cowpeas set more pods for reference: 1. Planting density should be reasonable. The best seedling age for planting is when the young leaves of the cowpea seedlings have just unfolded. The reasonable row spacing for cowpeas...
What methods can make cowpeas set more pods? Please explain the methodsTo achieve high yields when growing cowpeas, you need the cowpeas to set more pods; here are several methods that can make cowpeas set more pods for reference:
1. Planting density should be reasonable. The best seedling age for planting is when the young leaves of the cowpea seedlings have just unfolded. The reasonable row spacing for cowpeas is generally 60 cm for the narrow row and 80 cm for the wide row, with a trellis height of 1.8 to 2 m; the taller the trellis, the greater the row spacing should be. Plant spacing is about 45 cm, generally with two plants per hole. If the planting density is too high, it will cause the cowpea plants to grow excessively and make it difficult for them to set pods.
2. Day-night temperature difference must be controlled. Cowpeas have strong heat tolerance but are not tolerant of freezing; the suitable growing temperature is 20°C to 25°C. During the flowering and pod-setting stage of cowpeas, the daytime temperature, nighttime temperature and day-night temperature difference should be well controlled. The more suitable growing temperature during the flowering stage of cowpeas is that the daytime temperature should not exceed 30°C and the nighttime temperature should not exceed 18°C. Therefore, cowpea growers are reminded to manage the timing of closing the greenhouse well, and to delay the closing time as the temperature rises. The standard for closing the greenhouse during the flowering and pod-setting stage of cowpeas is when the greenhouse temperature reaches 17°C.
3. Light conditions should be suitable. Although the cowpea varieties suitable for greenhouse cultivation do not have strict requirements for photoperiod, they have relatively high requirements for light intensity, especially during the flowering and pod-setting period. If there is insufficient light, it will cause cowpea flower and pod drop.
4. Soil moisture and nutrients should be appropriate. Watering time and amount should be flexibly controlled according to the local soil moisture conditions. During the entire growth period of cowpeas, the most basic practice is to water three times: carry out the first watering after planting, and it must be thorough, otherwise the plants will be uneven; water the second time when the vines grow to 0.6 m high; the most critical point in cowpea production is to water at the pod stage, not at the pod-setting stage; watering is not suitable during the full flowering stage of cowpeas, so the third watering should be done before the early flowering stage, and combined with watering, spray a flower-promoting and fruit-retaining agent, which is more conducive to cowpea flowering and pod setting. After pod setting, water lightly once more to promote the expansion and elongation of the cowpeas. In addition, do not apply too much nitrogen fertilizer, otherwise it will cause excessive vine and leaf growth of cowpeas and delay flowering and pod setting. Phosphate fertilizer should be applied more to promote the formation of root nodules and enhance their nitrogen-fixing capacity.
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