High-yield planting techniques of cowpea: when is the planting time? How can the output of field management be high?

Cowpea is rich in vitamin B, C and plant protein, which can calm the mind, regulate the digestive system, eliminate the fullness of the chest and diaphragm, and have a relatively stable sales market, so what are the high-yield planting techniques of cowpea? When is the planting time? How can the output of field management be high?

When is the cowpea planting time?

According to the different planting time, cowpea is divided into spring cowpea, summer cowpea and autumn cowpea.

The main results are as follows: 1. spring cowpea seedlings are generally raised from late February to late March, planted from late March to late April, harvested from early June to mid-August, and seeds are collected from late July to early August.

2. Summer cowpea was sown from April 20 to June 30 in the Yellow River basin, from mid-April to early July in the Yangtze River basin, from early April to early August in northern Guangxi, spring and summer in Zhejiang and Fujian, and spring in Leizhou Peninsula.

3. In autumn, cowpea should be sown from August to September.

Second, cowpea planting how to manage the high yield in the field?

1. Seedling stage management

Two days after sowing, water was lightly drenched according to the dry and wet condition of the ridge surface to ensure the moisture needed for seedling emergence. After 5-6 days, when the bean seedlings had two leaves in one heart, 800 times of Jing du Qing and 300 times of Jinggangmycin were drenched once, and 750 kg of medicine solution per mu was used to prevent and control root rot, blight and other diseases. Seedling in time, guarantee one plant every 20 centimeters. Be careful not to touch the plant when using the medicine. Fertilize properly according to the growth of bean seedlings, use urea 3kg / mu, add the same amount of potassium fertilizer to water 1000kg ~ 1500kg, and sprinkle with thin water after application.

The prevention and control of bean thrips is the focus of the seedling stage, bean thrips harm young heart tips, that is, common untapped extraction, only two leaves, commonly known as "blind heart". The control of thrips can be treated with isocarbophos 600x plus isocarbophos 600x, avermectin 1500 times plus imidacloprid 1500 times, or good winter 500x plus 5% fipronil 1500 times, sprayed once every 6 days and sprayed twice at seedling stage.

2. Management of trailing period

Bean seedlings have vines to pull out, to carry out large soil cultivation, combined with fertilization, 30 kg of phosphate fertilizer plus 10 kg of urea per mu, evenly applied on both sides of the ridge, cover fertilizer and weeds with furrow soil, pay attention to fertilizer and soil do not touch beanstalk. If possible, 2000 kilograms of barnyard manure can be applied per mu to cultivate soil on the edge of the ridge. After cultivating the soil, drench once with thiamine mixture, add 1000 kg of water with 1 kg of copper sulfate and 2 kg of carbamine per mu.

At the same time, the vine is put on the shelf, usually with a herringbone frame. When the seedlings are prosperous and long, a conical frame can be used, that is, every 40 cm, three bamboos are inserted into equilateral triangles, the ridges are tied into cones, and the upper frame is horizontal bamboo. In order to facilitate operation, the height of the scaffolding should be controlled within 2 meters. The conical frame can increase the yield by more than 10% compared with the herringbone frame. Control moisture, run horse water every 3 days in sunny days, wet ridge surface at the same time, pay attention to drainage in rainy days.

The main diseases and insect pests in the vine period are rust, powdery mildew, bean thrips and bean borer. You can use trimethophos (800-500 times) plus isocarbophos 500 times plus an Lubao 800 times, or Xiansheng 600 times plus omnipotent powder 600 times plus Yisuli 800 times, pay attention to the concentration of fenrust Ning from light to dense (800 times 500 times), spray once every 7 days, and spray Yunda 120 every 14 days.

3. Harvest time management

After sowing for about 60 days, the plant enters reproductive growth, and the harvest time appears, fertilizing every 7 days, using 10 kg compound fertilizer plus 5 kg urea per mu, mixing with 100kg manure for 3 days, adding 1500 kg of water to the ridge surface, sprinkling thin water after application, or applying 20 kg compound fertilizer, 10 kg potash fertilizer and 10 kg urea per mu, under the opening hole 35 cm apart on the ridge edge, applying on one side of each ridge. Apply the same amount of fertilizer on the other side after 10 days. The hole should be drenched with enough water before application, do not drench water on the ridge surface within two days after application, and do not apply fertilizer on rainy days. 1-2 cm water should be kept in the furrow during the harvest period.

Pest control can choose the following agents to control spot blight and blight: 75% chlorothalonil 600 times plus 70% mancozeb 600 times; rust and powdery mildew: 50% colloidal sulfur 300 times, 1000 kg liquid per mu, but only if there is no disease, prevention is better than cure. The pest is mainly bean borer, available:

① vegetable 1000 times plus imidacloprid 1500 times

② avermectin 1500 times plus an Lubao 600 times

③ Bacillus thuringiensis 1000 times plus insecticidal 800 times. The above three agents should not be mixed with fungicides.

As the control of bean borer is very difficult, the spraying time should be sprayed every 3-4 days, and it is better to spray bean blossoms before 10:00 in the morning. Add 120 cloud spray every 7 days. It is advisable that the harvest should not be dry in the morning.