A Soybean-Dandan Planting and Breeding Model for Three Seasons a Year
A soybean and dandan technology, applied in the field of artificial breeding of resource insects, can solve the problems of prominent contradiction between supply and demand, different quality of doudan, and low output of doudan, achieving simple methods, alleviating insufficient market supply, increasing annual output and net profit effect
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Embodiment 1
[0012] Embodiment 1 soybean planting technology
[0013] 1.1 Selection of soybean varieties: Generally, soybean varieties with tall plants, round leaves and many branches and vines are selected. Commonly used varieties in production are soybeans (Dongxin No. 3, Xudou series, Zhoudou series), green beans and black beans. Soybean varieties can be planted in the first two seasons, and green beans with a long growth period and low temperature resistance are preferred for planting in the third season.
[0014] 1.2 Origin environment: choose areas with no pesticide pollution and good ecological environment. Fields with fertile, loose soil and convenient irrigation and drainage.
[0015] 1. 3 kinds of pre-treatment: seeds are screened and then air-dried (not exposed to the sun) for 2-3 days, and the seeds are dressed with chemicals; after the soil is prepared with fertilizer in a certain proportion, spray a small amount of water to make the soil moist, and then cover and seal it wi...
Embodiment 2
[0021] Embodiment 2 Doudan Seed Production Technology
[0022] 2.1 Doudan seed selection: In November every year, dig out the 5th instar larvae of the soybean hawkmoth that have been cultivated in the third season of diapause in the soil, and select the doudan with no injury, no black spot, worm body circle, and vitality. as breeding insects.
[0023] 2.2 Overwintering preservation: Preserve the preferred Doudan species in a wooden box prepared with a matrix (local soil and wood chips in a 2:1 ratio) in the delivery room. The wooden box is 100cm×200cm, and about 5 instar larvae are placed in about 100cm×200cm. 5kg, keep the soil moisture at about 20% during the winter, and pick out the doudan that died due to dehydration or infection.
[0024] 2.3 Warm seeds: The time is the end of February of the following year, the temperature of warm seeds is 28-30 ℃, and the temperature can be adjusted according to the growth conditions of soybeans. If the heating facility has insufficie...
Embodiment 3
[0028] Embodiment 3 Doudan cultivation and field management
[0029] 2 days after hanging eggs, pay attention to observe the hatching rate of eggs to ensure the base number of hatched larvae. During the breeding period, the main purpose is to prevent birds from entering the greenhouse to harm Dodan larvae. After August, a large number of lepidopteran pests will appear in the greenhouse, mainly including Spodoptera litura, Beet Spodoptera, inchworm, etc. The larvae have strong competition with Dodan larvae. In particular, when Spodoptera litura larvae occur, Dodan larvae generally stop feeding and stop growing until they die. Therefore, appropriate short-acting and low-toxicity insecticides should be sprayed on the bean leaves 15 days before the doudan eggs are put in to reduce the population base of the pests. At the same time, according to the soil moisture, timely irrigation and water replenishment. The bean dan peels twice, that is, it will automatically transfer to other...
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