Chemical control and management technology of protecting flowers and increasing pods of soybean
1. Application of rare earth
The rare earth is also called rare earth micro-fertilizer or rare earth nitrate, and the trade name is Changle Yiphysu, which is a new type of rare earth fertilizer pioneered and popularized in our country. At the seedling stage and the first flowering stage of soybean, spraying the rare earth solution with a concentration of 0.03% and 0.08% respectively can increase the grain protein content by 5.9% and the fat content by 8.5%. The yield increased by 15% and 20%.
2. Application of paclobutrazol
Paclobutrazol, also known as PP333, is a new type of plant growth regulator; when applied to soybean, it can dwarf the plant, thicken the stem, shorten the petiole, prolong the functional period of leaves, help ventilation and light transmission and prevent lodging, and can also treat soybean mosaic disease, generally increasing production by about 20%. Application method: 25 kg of 250ppm paclobutrazol solution was sprayed per mu from branch to early flowering stage of soybean.
3. Application of sodium bisulfite
Sodium bisulfite is a photorespiration inhibitor, which can effectively reduce plant respiration intensity, reduce dry matter consumption and increase yield by 10.5% on average. Application method: 8 grams of sodium bisulfite per mu, 50 kilograms of water, sprayed once in the early flowering stage and full flowering stage of soybean.
4. Application of triiodobenzoic acid
According to the experiment, in the early flowering and full flowering stage of soybean, spraying with the solution of 100ppm and 200ppm at the concentration of 50 kg per mu could increase the number of flowers by 2540%, reduce the shedding rate of flowers and pods by 7%, increase the number of pods per plant by 5%, increase 100-grain weight by 0.5 g, and increase the yield by 5% and 23% respectively. Foreign reports can increase the yield by 10%.
5. Application of Yancheng Ling
Zengchanling, also known as 4-iodophenoxyacetic acid, is a plant growth stimulant; during the period from flowering to podding of soybean, 20~30ppm solution was sprayed twice every 7 to 10 days, spraying 50 to 75 kg per mu each time, which could increase the number of flowers per plant by 20%, reduce the shedding rate of flowers and pods by 10%, and increase yield by 315%.
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Early control of soybean diseases
If soybean wants to get high yield, it is mainly to solve the problems of "seed, water, fertilizer and light". The cultivation technique of "deep, narrow and dense" is a cultivation model with comprehensive high-yield techniques based on this principle. It takes the selection of dwarf varieties as the breakthrough, the air suction seeder and the general machine as the carrier, combined with "deep" (that is, deep loosening, deep fertilization and layered fertilization), "narrow" (that is, narrow row), "dense" (that is, increasing planting density). It is a cultivation technique with large-scale seeder as carrier. "species" means variety.
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Planting technique of 45 cm narrow row dense planting of soybean
The 45 cm narrow row dense planting cultivation technique of soybean is a new technology selected according to the climate, soil and cultivation characteristics of our region on the basis of the narrow row dense planting technology of soybean introduced from Heilongjiang in 2004 in Dunhua City. it is a new breakthrough in the reform of farming system in Dunhua City. Experiments were carried out in Guandi, Heishi and Shaheyan farms in 2005. the average yield of soybean in the experimental area was 202.9 kg per mu, an increase of 24.9% over the control. in 2006, the whole city popularized 1500 mu, with an average yield of 203.52 kg per mu, the highest.
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