Uniform planting and High-yield cultivation techniques of Soybean
The main results are as follows: 1. the planting density, row spacing and plant spacing are determined according to the plant type and branching characteristics of the variety. The main stem type varieties of ① with dwarf, precocious and anti-nephew branching: row spacing 30-40 cm, plant spacing 8-10 cm, seedling density 1.8-25000 plants.
2. the planting density is determined by the level of soil fertility and management level. After the planting row spacing is determined according to the variety, the density should be adjusted according to the soil fertility and the level of water and fertilizer management.
3. Sow as early as you can. Early sowing can significantly increase yield and fat content, usually sowing on June 10-20. When sowing, it is necessary to sow enough moisture to lay the foundation for the early squatting seedlings.
4. Use adjustable precision seeder or manual on demand.
5. And time to fix the seedling and replenish the seedling.
6. Densification measures. The density of ① in seedling stage was insufficient. When the field emergence rate is low and the density is insufficient, the seedling stage can be regulated by replenishing seeds and seedlings, increasing branch growth by fertilizer and water at branching stage, and promoting pods per plant by fertilizer and water at flowering stage. The density of ② is too high or too high. According to the key points of uniform planting technology, the density is generally not too high, when the density exceeds the best density of the technology. Water and fertilizer at flowering stage of ③. Water and fertilizer at flowering stage is the key measure to increase soybean yield. General mu topdressing urea 5-10 kg, according to the seedling situation to determine the amount of fertilizer. To prevent the field canopy, flowers and pods caused by excessive topdressing.
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Cultivation techniques of narrow row and close planting of soybean
Shrinking ridges and increasing rows and narrow rows and close planting are one of the effective ways to increase soybean yield. The cultivation method is divided into three forms: first, large ridge and narrow row dense planting, which is a wide platform narrow row dense planting method which combines the original two ridges into one ridge or one semi-synthetic ridge. Its big ridge width is 97.5~140cm, sowing 4-6 rows on the ridge, and protecting 40-500000 seedlings per hectare. At present, 70cm ridge cultivation can generally increase the yield by about 20%. This cultivation technique is suitable for low waterlogging areas in the south and east of China with high productivity.
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New varieties of soybean
Xinfeng No. 1 was bred by sexual hybridization with Chang 4 as female parent and Qunxuan 1 as male parent in Hongmiaozi Township Agricultural Technology extension Station of Xinbin County. It was examined and approved by Liaoning Provincial crop Variety approval Committee in December 2002. This variety has a growth period of 121 days and belongs to an early-maturing variety. The average plant height is 94.7 cm, with sub-limited podding habits and 17.9 nodes of the main stem. The stem is thick and tough, with developed root system, lodging resistance, round leaves, gray hairs, white flowers, gray-brown pods, 59.9 pods per plant and 4 pods per plant. Yellow grain, yellow navel
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