Scientific planting technology of purple lentil

Purple lentil is a common variety of lentils, which has pods, which is a temperature-loving and cold-resistant variety. Therefore, it is more common in Fangnan area of our country. Purple lentils are now very popular in the market, and now the number of people who grow them is gradually increasing. If you want purple lentils to be high-yielding, you need to plant them scientifically.

Scientific planting technology of purple lentil

1. Planting mode. There are many lines of direct broadcast in late spring, and tender pods are harvested one after another from summer and autumn to early frost. Monoculture or intercropping with corn, corn straw as support, or intercropping with garlic can also be planted on the edge of the field.

2. Sowing density: the plant spacing of short vine precocious cultivation is 30cm 45 cm, the row spacing is 65cm 70cm, the plant spacing of long vine hedgerow pruning cultivation is 45cm, the row spacing is 100cm 130cm, the herringbone frame pruning cultivation is 133 cm, the plant spacing is 35 cm, and the working road between the border is 66 cm.

3. Sowing method: ditch or hole sowing, sowing depth 5-7 cm, should be covered with plant ash after sowing.

4. Sowing rate: 57kg / ha for monoculture and 6kg / ha for mixed cropping.

Growth conditions of purple lentil

Like warm and afraid of cold, death in case of frost. The suitable temperature for growth is 20-30 degrees Celsius, the optimum temperature for flowering and fruiting is 25-28 degrees Celsius, and the temperature can withstand 35 degrees Celsius. At a high temperature of 35-40 degrees Celsius, the germination power of pollen decreases, which is easy to cause flowers and pods to fall. The optimum temperature for seed germination is 22-23 degrees Celsius. Short-day crops. Some varieties are insensitive to photoperiod, so they can be planted in the north and south of our country. Lentils are more resistant to shade. The requirement of water content is not strict, and the drought resistance of adult plants is very strong. It has a wide adaptability to soil, and the sandy loam with good drainage and fertile soil is the best. The adaptive range of PH is 5.0-7.5.

Fertilizer and water management of purple lentil

Lentils are not suitable for watering or topdressing at the early flowering stage and before setting pods. When the first inflorescence sits on the pod, it begins to water and fertilize. Under the condition of plastic film mulching cultivation, the method of pouring dark water under plastic film should be adopted to apply quick-acting chemical fertilizer or rotten human manure with water. Lentils prefer nitrate nitrogen to ammonia nitrogen, which will inhibit plant growth and development when applied for a long time. Therefore, when applying flowering and podding fertilizer, urea, Shibangjin A631 double chelating compound fertilizer and human feces and urine should be applied more often. During the podding period of the lower inflorescence, the fertilizer should be watered and topdressing once for 15 days, about 10kg of ternary compound fertilizer per mu or 100kg of human feces and urine. In the podding stage of the middle inflorescence, it is generally 8 Mel 10 days watering, topdressing 1 time, each time irrigating urea 7 Mel 8 kg per mu. The flowering stage, podding stage and lateral branch flowering and podding stage of upper inflorescence are usually watered and fertilized once in about 10 days, with 5 kg urea and potassium sulfate per mu each. In order to improve the light transmission condition in the middle and later stage of pod setting, the old yellow leaves in the middle and lower parts should be removed in time, some leaves should be removed and the late buds should be wiped out where the stems and leaves are too dense.

Pest control of purple lentil

First, white silk disease. Prevention and control methods:

1.The application of hydrated lime 100~150kg to adjust soil acidity and alkalinity should be neutral, or a large amount of mature organic fertilizer should be applied. The diseased plants were removed in time and destroyed centrally.

2. At the initial stage of the disease, 15% triadimefon wettable powder or 50% methyl acidophos wettable powder was applied, and 100% of fine soil was removed to the rhizome of the diseased part, and the control effect was obvious.

3. If necessary, it can also be sprayed with 1000 times of methylisofos EC, once every 7 to 10 days, once or twice. Trichoderma was used to control white silk disease. With cultivated Trichoderma harzianum.

Second, cotton bollworm. Agricultural prevention and control

1. Autumn ploughing and winter irrigation can destroy a large number of overwintering pupae in the soil, remove some eggs and diseased pods combined with pruning and branching, so as to reduce the source of insects. Planting corn belt booby traps. During the occurrence of moths, they are hunted and killed in the armpits of corn heart leaves every morning. Poplar trap and kill, cut off poplar branches with leaves, 1 for every 10, 10 per mu, change every 5 to 10 days, and kill every morning.

2. Biological pesticide and virus control: spraying with BT250 grams or 0.296 Avermectin EC 1000 × 2000 times, or spraying Helicoverpa armigera nuclear polyhedrosis virus in the early incubation period of cotton bollworm spawning period, containing 0.01live spores per milliliter, 0.5kg per mu, once every 3 days. A total of 2 to 3 times, availability trapping, synthetic cotton bollworm female trapping, each trapping core traps an average of 200 adults, and 5% Yitaibao 1000 times liquid or Miyaolu 1000 times solution can be used to control cotton bollworm.

Purple lentils are more water-resistant, so there are no special requirements when choosing a site, as long as they are not frozen. After planting, scientific management is needed, fertilizer, water and insect pests are indispensable. I believe that as long as it is done well, the growth of purple lentils will be good, and the yield will be relatively higher.