High-yielding Cultivation Techniques of Summer Bean in Protected Field
1. Variety selection should choose varieties that are both resistant to heat and rust. Generally used in Dalian Academy of Agricultural Sciences selected agricultural farmers 97-5 or Liannong 13 yellow, but also available in Thailand beans, these varieties are white and green series. If you like green beans, you can use Lianniannen No.1.
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2. The sowing method is generally in early June and the seeds are sown directly after the last meal. At this time, wide rows of dense plants should be used to facilitate ventilation. According to the spacing of 0.25 meters 0.65 meters sowing, 2-3 seeds per hole, sowing the best 3 days after watering, the seeds must be mixed with medicine (with "901" agent, control root rot). After sowing, the small earth package is used to moisturize and prevent dryness. When the emergence rate reaches 80% after one week, the small water is used to keep seedlings and seedlings.
3, management of pre-caries
(1) Adjust the temperature and humidity: In addition to the top film, the film should be opened as much as possible to facilitate ventilation and cooling. At this time, the film has the function of shading, and the relative temperature in the shed is lower. However, it is necessary to fix the surrounding film to prevent the typhoon from blowing the film and cause unnecessary economic losses. At this time, it is necessary to control the seedlings with good humidity and immediately cultivating and weeding after watering. Afterwards, it is generally not watered. If the bean leaves are still wilting at 2:00 p.m., small water should be poured to prevent excessive control and affect normal growth.
(2) Timely tip: During the growth period of kidney bean, it is extremely prone to high temperatures and it is elongated during the internodes. This makes it easier to make the seedlings weaker. In order to overcome this shortcoming, it must be tipped at the right time. When the third group of leaves is formed, the upper growing point is cut off, that is, when the seedlings grow to about 80 centimeters, the tip of the plantlets. As the pod grows, the vine grows thick and grows quickly. The larvae grow quickly in the lower internodes. The result is a group of branches that can adjust the structure of the plant and can flower early and multiply. In addition, the chemical control measures of “Dwarf-Spirit†600 times the root can also be used to make the bean seedling thick, promote lateral branch sprouting, play a role in controlling the leggy.
4. Management of scarring period
(1) To prevent falling flowers and falling into abundance: The summer bean production is afraid of flowering in the event of high temperatures, rain, falling flowers and falling leaves. Protected areas can overcome this shortcoming. But also pay attention to the high temperature, the air humidity less than 75% is likely to cause falling flowers, should control the soil moisture at the same time, 9:00 am to spray water to cool the plant and increase air humidity. In addition can be used "Drop" each 2 kg of water, spraying with a small sprayer, the effect is good. When it is too dry, you can also pour small water, which will help you to blossom.
(2) Strengthen the management of fertilizer and water: When most of the first bean pods grow to 2 to 3 cm, the pods are basically sitting and can be poured with water, and potassium dihydrogen phosphate (10Kg/mu) can be topdressed with water. Every time you pick up a commodity, you have to pour water once. Top dressing with water can be used alternately with potassium dihydrogen phosphate and human waste.
(3) Sealing the growth point: When the bean pods approach the roof, they must control the upper part of the madness. When the pods are 20 centimeters away from the shed, the growing point is removed. Otherwise, the upper part will be in a shaded state, resulting in poor plant growth.
5. Diseases and pests prevention of kidney beans
(1) Locust: In general, pre-harvest diseases and insect pests of the bean are light, and there is no need to fight drugs. Only two fight insecticides during flowering, control of soybean meal, combined with foliar fertilizer, it is best to use BT.
(2) Rust: large temperature difference, high humidity and easy rust, but the shed is more exposed to light. After the disease was found, spores were not broken before the timely spraying of 500 times aluminum diphosphorus plus mancozeb 500 times liquid, can also be used Triadimefon 1000 times alternating use, continuous use 2-3 times, basically able to control live.
(3) Anthrax disease: Due to high temperature and high humidity in the later stage of scab, it is easy to get anthrax. It can be sprayed with anthraquinone formamide 500 times or SPK 800 times.