Technical specification for field production of pollution-free king

On December 24th, Hebei Provincial Bureau of quality and Technical Supervision issued the "Technical regulations for Field production of non-pollution King" as the local standard of Hebei Province (DB13/T2117.3-2014). This standard is put forward by Hebei Academy of Agricultural and Forestry Sciences.

I. scope of technology

This standard stipulates the environmental conditions, production management, pest control and harvest measures of the non-pollution king in the field.

This standard is applicable to the pollution-free field production process of the open land king in Hebei Province.

II. Environment of producing area

The production base chooses the agricultural production area with good ecological environment, far away from pollution sources and sustainable production capacity. The air quality in the producing area conforms to the GB3095 II standard, the irrigation water quality conforms to the GB5084 standard, and the soil quality conforms to the GB15618 II standard.

III. Production management

1. Land selection and land preparation. Choose plots with loose, fertile soil and good drainage. Combined with land preparation, 2500 kg of rotten farm manure was applied per mu and raked flat.

two。 Sow seeds. Select the dried mature seeds of Caryophyllaceae stipulated in the Pharmacopoeia of the people's Republic of China, and the germination rate is more than 70%. From mid-late September to early October, artificial sowing was carried out in a shallow trench with a row spacing of 25 cm and a depth of about 3 cm. The seeds were evenly scattered into the ditch and covered with fine soil 1.5 cm after sowing. Mechanical sowing was carried out according to the row spacing of 25 cm and the depth of 1 cm. The amount of seed used per mu is about 1.5 kg.

3. Ploughing and weeding. When the seedling is 7-10 cm high, weeding is carried out for the first time, the soil is loosened, and the weeds are pulled out by hand. At the same time to carry out inter-seedling and supplementary seedlings, strip sowing according to the plant spacing of 15 cm between the seedlings, if there is a lack of plants, the strong seedlings will be replenished. The second time was carried out from March to April in the second year. In the future, depending on the situation of weeds, it is necessary to keep the soil loose and field free of weeds.

4. Watering and draining. During the budding period of early spring and early winter, water properly and pay attention to drainage in the rainy season.

5. Top dressing. It is generally carried out 2-3 times, and for the first time, when the seedling height is 7-10 cm, 15 kg of urea is applied per mu after weeding. After ploughing and weeding in the spring of the following year, 30 kg of compound fertilizer was applied per mu.

6. Pest control.

Basic principle: implement the plant protection policy of "prevention first, comprehensive prevention and control". Select resistant varieties, cultivate strong seedlings, strengthen cultivation management, scientific fertilization, comprehensive use of agricultural, physical and biological control, combined with scientific and reasonable chemical control, pest hazards can be controlled within the allowable range. The safe use interval of pesticides complies with GB/T8321.1-7, the varieties of pesticides are not marked, the use of pesticides is discontinued 30 days before harvest, and the pesticide mixtures carry out the safety intervals of the most residual active ingredients.

(1) black spot. Agricultural control: remove diseased branches and fallen leaves, discharge stagnant water in time, increase the application of organic fertilizer, and enhance plant disease resistance. Chemical control: before sowing, mix the seeds with 70% thiophanate methyl at 0.2% of the seed amount, or with 25% carbendazim at 0.3% of the seed amount. At the initial stage of the disease, spray control was used with 1000 times of 70% carbendazim or 50% carbendazim, or 1000 times of carbendazim, or 58% of metalaxyl manganese zinc, or 1000 times of thiophanate (isobarbazide). Or 1500 times of mancozeb complex, or 1500 times of carbendazim, generally about 1 time in 10 days, 2 times in a row. Avoid the high temperature at noon when spraying.

(2) aphids. Physical control: in the early stage of the occurrence of winged aphids, silver gray plastic strips with a width of 5 cm are hung in the field to avoid; when winged aphids occur, yellow boards are used in the field in time, and commercial yellow boards sold in the market can be used. Or with 60 cm × 40 cm rectangular cardboard or wood, coated with yellow paint, and then coated with a layer of engine oil, hanging between the lines, hanging 30 pieces per mu. When the yellow board is covered with aphids, apply another layer of oil. The height of the yellow board is about 30 cm from the top of the crop. Biological control: when there are few aphids in the early stage, natural enemies such as ladybugs are protected and used for natural control. At the initial stage of the occurrence of wingless aphids, plant-derived insecticides such as 0.3% matrine emulsion 800mm 1000 times, or natural pyrethrin 2000 times, or 1% osthol 500x, or 10% nicotine EC insecticides 500 times 1000 times were sprayed. Chemical control: in the early stage of aphid occurrence, alternate spray control with 1000 times of imidacloprid, 1500 times of acetamiprid, 3000 times of 2.5% permethrin, 1500 times of 4.5% cypermethrin, or 2000 times of 50% imidacloprid, or 5000 times of imidacloprid, or 4000 times of imidacloprid, or other effective agents.

(3) small cotton bridge worm. Physical control: during the occurrence of adults, traps such as black light, Jiaduo insecticidal lamp and solar energy insecticidal lamp are used in the field. Biological control: at the peak of egg incubation, use 10 billion live spores / gram Bacillus thuringiensis wettable powder, or fluazuron (5% Yitabao) or 25% diflubenzuron suspension 2500 times, or 25% diflubenzuron suspension 3000 times, or flufenuron EC 2500003000 times, or 0.36% matrine water solution in young larvae Or natural pyrethrum (5% pyrethrin EC) 1000 × 1500 times liquid, or nicotine (1.1% green wave) 1000 times liquid, or doxorubicin (2.5% vegetable Xi suspension) 3000 times solution, or pyrethroid (24% rice full) 1000 × 1500 times solution spray control. Spray once in 7 days, control 2 times 3 times. Chemical control: 3000 times of 1.8% avermectin EC, 3000 times of 1% methylaminoavermectin benzoate EC, 1000 times of 4.5% cypermethrin, or 1000 times of bifenthrin (10% Uranus EC), or 4000 times of 20% chlorobenzamide, or 1000 times of phoxim EC were sprayed before the third instar. Spray once every 7 days, generally prevent and cure 2 times continuously for 4 times. Use it alternately.

7. Harvest. In the second year after autumn sowing, from late May to early June, when the calyx tube turns yellow and the seeds turn black, harvest the aboveground part and dry and thresh it.

Bureau of Science and Technology of Neiqiu County, Institute of Economic crops, Hebei Academy of Agricultural and Forestry Sciences

Wen Chunxiu, Liu Ming, Xie Xiaoliang and Liu Lingdi

Yang Taixin, Yang Yanjie, Tian Wei and Zhang Fashui

Guo Baoyu and Han Lushen