Planting Technology Lists
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Yield reduction reasons and yield protection techniques of soybean continuous cropping cultivation
The main results are as follows: 1. the reasons for the yield reduction of continuous cropping soybean are slow growth, dwarfism, yellow leaf color, few pods and few seeds, resulting in a significant decrease in yield. In the short term, continuous cropping will aggravate the harm of cyst nematode, root maggot, root rot, heart borer, gray spot and malignant weeds, and the partial consumption of soil nutrients, resulting in the deficiency of soil nutrient elements and the increase of pathogenic fungi in soil. the number of beneficial bacteria decreased, and some toxins were produced, which led to a serious decline in soybean yield and quality. In the long run, after long-term accumulation and reproduction, diseases and insects
2019-01-16 -
Causes and technical measures of soybean yield reduction in successive cropping
With China's entry into WTO and the opening policy of grain market, the problem of soybean planting is becoming more and more serious, and the reduction range increases with the increase of continuous cropping years. According to investigation and study, the yield of soybean decreased by 6.1%, by 9.9% in one year, by 13.8% in two years and by 19.0% in three years. Moreover, the yield of soybean decreased by 100 seeds, the rate of diseased seeds and insect eating increased, and the quality of soybean decreased significantly. According to the research department,
2019-01-16 -
Soil improvement techniques for soybean cultivation
1. Soil conditions for high soybean yield Soil conditions are the basis for high soybean yield. Soil moisture status, nutrient status and some physical properties of soil are important factors affecting soybean yield. Soybean seeds require more water for germination than cereal crops. The young roots of soybean are soft and have a large moisture content. Suitable soil moisture conditions can promote the young roots to extend to depth. The main root of the plant can reach about 1 meter, and the lateral root can extend parallel to about 0.5 meters. When soil moisture is insufficient, it will affect its vertical and horizontal expansion growth.
2019-01-16 -
Three "early" soybeans planting
First, early chemical removal. 3-4 days before seedling emergence after sowing, 50% Acetochlor EC 100-150 ml / mu was used to seal the soil of 30-40 kg of water. If there are weeds in the field at the time of application, 20% g 100 ml / mu can be mixed with it. If the soybean has emerged and there is no time for soil closure, 10% grass EC 60-75ml / mu, or 15% EC 60-75ml / mu, or 12.5% grass energy EC 60-75ml / mu, 40% water can be used.
2019-01-16 -
Field management techniques of soybean in the middle and later stage
1. Management of flowering and podding period the main task of this period is to strive for more flowers, early flowering, full flowering, increasing flowers and pods, and preventing the shedding of flowers and pods. It is necessary to look at seedling management, the combination of protection and control, high-yield fields to control mainly, to avoid premature ridge closure, in order to achieve the maximum leaf area at the end of flowering. Specific measures: continue weeding before sealing ridges, look at the seedlings as appropriate after water and fertilizer, early flowering stage should be topdressing for weak seedlings, not topdressing for strong seedlings to prevent overgrowth. The effect of topdressing phosphate fertilizer at flowering and pod stage was obvious, during this period, the leaf area of soybean reached the maximum, water consumption increased, transpiration intensity and water demand.
2019-01-16 -
Key techniques of narrow row and close planting of soybean
Soybean narrow row close planting cultivation is an advanced cultivation technology with large application area and rapid development in the world. Heilongjiang Province began in the early 1990s and was identified as a key research project of the provincial party committee in 1995. First, to select suitable varieties and do a good job in seed treatment, we must choose dwarf and semi-dwarf varieties with lodging resistance and high yield-increasing potential. At present, the more suitable varieties for production are Hefeng 25, Hefeng 35, Suinong 14, Beifeng 14 and Beifeng 1.
2019-01-16 -
Control of Botrytis cinerea in cut flowers
Symptoms: at first, the petals appear oval, brown, large and wet spots, followed by gray mildew, petals and whole flowers rot, and can also infect stems and buds. Reason: long-term exposure to low temperature and humid environment. Control methods: keep the plant dry as far as possible, it is best to use drip irrigation to control fertilizer and water; maintain good ventilation; spray 75% chlorothalonil 500 times, or carbendazim 500 times, alternate use, spray once every 7 to 10 days; 10% speed can be applied in the greenhouse in the evening
2019-01-16 -
Cultivation method of narrow row and close planting of soybean
Narrow-row and close-planting cultivation of soybean is an advanced cultivation technique with large application area and rapid development in the world. Since the early 1990s, on the basis of digesting and absorbing foreign technology, combined with the natural characteristics and production conditions of our province, we have explored the narrow-row and close-planting cultivation techniques of soybean which are suitable for the production conditions of our province. Soybean narrow row close planting can be divided into two modes: horizontal cropping narrow row close planting and ridge planting narrow row close planting. The former high-yield cultivation technique is flat sowing, flat tube, narrow row and close planting to the end, while the latter is based on ridges.
2019-01-16 -
New technology of soybean topping to increase yield
The terminal bud of soybean has strong growth ability and consumes a lot of nutrients. Removing the terminal bud of soybean to transfer the nutrients to the pod is beneficial to increase yield, especially for the soybean with high soil fertility and strong growth, the effect of increasing yield is more significant when the terminal bud is removed in time. The method of removing the top bud of soybean is as follows: in the early flowering stage of soybean growth peak, the top of the main stem is removed from 2 cm to 3 cm tender head, so that the top growth is inhibited, nutrients are concentrated to supply reproductive growth, promote more flowering and pod, which is beneficial to make the plant short and strong. enhance stress resistance. Soybeans should be topped & ldquo; III
2019-01-16 -
Ten ways to increase soybean production
First, when the soil moisture is sufficient for seedling replanting and the time can catch up, soak the seeds with the original varieties for 2-3 hours and then replant; although the soil moisture is sufficient, the farming time is already late, you can speed up budding and replanting or replanting with precocious varieties; if the replanting time cannot catch up, seedlings with not less than one compound leaf can be taken and transplanted with soil as early as possible in cloudy or sunny afternoons, and watered immediately after planting to facilitate survival. Second, if the soybean has the trend of overgrowth or greedy green late maturity, the top of the main stem can be removed about 2 cm at the early or full flowering stage of the soybean. Or use sharp iron about 33 centimeters long
2019-01-16