Control of Botrytis cinerea in cut flowers
Symptoms: initially oval petals, brown, large and wet spots, followed by the growth of gray mold, petals and whole flowers decay, but also infected stems and buds. Cause: Long-term exposure to low temperature and humidity.
Control methods: keep the plants dry as much as possible, it is best to use drip irrigation for fertilizer and water control; keep good ventilation; spray 75% chlorothalonil 500 times solution, or carbendazim 500 times solution, alternately use, spray once every 7~10 days; in the evening, 10% Sukeling aerosol can be applied in the shed, and the shed is sealed overnight.
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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.
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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.
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