Eight measures to increase soybean production

One is to apply fertilizer to flowers and pods. The growth and development of soybean is the most exuberant in the flowering and podding stage, and it is the period in which soybean needs the most fertilizer in its life. The application of flower and pod fertilizer can reduce the shedding of flowers and pods, promote the fullness of grains and improve the quality. Flower and pod fertilizer should be applied at the early flowering stage, with the combination of nitrogen and phosphorus fertilizer, urea 3kg / mu, phosphate fertilizer 7.5kg / mu, hole application at 5 cm on the side of soybean root, and soil cover fertilizer after application.

The second is to spray foliar fertilizer. In addition to the three major elements of nitrogen, phosphorus and potassium, boron, zinc and molybdenum are indispensable trace elements in soybean. Therefore, spraying multi-element compound nutrient solution from flowering to grain filling stage of soybean has the effect of increasing pod and grain and increasing yield. The method is as follows: 500 grams of urea, 100 grams of potassium dihydrogen phosphate, 50 grams of zinc sulfate, 100 grams of borax (dissolved in hot water first) and 25 grams of ammonium molybdate are added to 50 kg of water. Spray evenly on the front and back of soybean leaves, spray 2 times for 3 times, and spray 75 kg fertilizer solution per mu.

The third is to hit the top and pick the heart. Timely topping and heart-picking can control overgrowth, protect flowers and increase pods. For soybean varieties with unlimited pod habits, reasonable removal of the top can also control the advantage of apical growth and reduce the shedding of flowers and pods. The method is from the peak flowering stage to the last stage of soybean flowering. Pick the top growing point on the clear day.

The fourth is to spray paclobutrazol. Spraying paclobutrazol could control the plant height and shorten the Internode length, and the yield of infinite pod type variety was higher than that of limited pod type variety. Application method: from 5 days before flowering to 7 days after flowering, 15% paclobutrazol wettable powder, 50g 100g, diluted with water 50kg 75kg, was evenly sprayed on the opposite side of the leaves, no re-spraying and no leakage.

The fifth is to spray triiodobenzoic acid. This is a multi-potent plant hormone that can inhibit apical growth advantage and promote axillary bud development. The plant is dwarfed, the branches are increased, and the stem is thick and thick, which is beneficial to ventilation and light transmission and prevention of inversion. Spraying once at early flowering stage and full flowering stage can mature 5-7 days earlier. Spray concentration: 100 × 10 at early flowering stage.

Sixth, before spraying, dissolve the pure product into alcohol according to the proportion of 1RU to 100, and spray it evenly after diluting with water. 50kg of spray solution per mu, early-maturing varieties and poor-growing soybeans should not be used.

Seventh, spraying Daizhuangsu can make the plant short and strong, enhance the lodging resistance, reduce the shedding of flowers and pods, improve the quality, and increase the yield by 10%. When the fourth compound leaf grows, 0.1% of the solution is sprayed once. To the early flowering stage, 0.05% of the solution is sprayed once, and the spray should be uniform, 50 kg per mu.

Eighth, spraying sodium sulfite is a respiratory inhibitor of light, which can increase the accumulation of dry matter, spraying once in the early and full flowering stages of soybean, diluted with 10 grams of sodium bisulfite and 75 kilograms of water per mu, and sprayed evenly in the afternoon. The photosynthetic micro-fertilizer was sprayed once at the early flowering stage and the full flowering stage of soybean, with 100 grams of photosynthetic micro-fertilizer per mu and diluted with 50 kg of water.