Dan 304 soybean
Variety source: Zhuanghe Agricultural Technology extension Center, selected by Dandong Academy of Agricultural Sciences.
Characteristics: growth period 135 days, plant height 90 cm, branches 3-4, 100-grain weight 22 grams, disease resistance, lodging resistance, yield 180-260 kg per mu.
Key points of cultivation: sowing from May 1 to 5, row spacing 1.7 feet, hole spacing 8 inches, 6000000 seedlings per mu.
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The effect of increasing the yield and income of autumn soybeans in rice field is good.
According to the experiment, after the middle rice is harvested, making use of the temperature and light conditions in the field, planting one season of autumn soybean can increase the yield of soybean by 60,120kg / mu and the economic income of 150,420 yuan / mu. It is suitable to be popularized in the regenerated rice areas below 400 meters above sea level. The technical points are as follows: first, the improved varieties of suitable land: the fields with anhydrous storage of recycled rice below 400 meters above sea level and all rice seed fields can be planted. After rice seeds are scattered, ditches are opened for drainage; after rice harvest, weeds and rice stumps are removed in time, not ploughing, and press
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Control measures of main diseases of soybean
Soybean mosaic disease the pathogen of soybean mosaic disease is virus, and there is no specific agent at present. The key to the prevention and control of the disease is to control the occurrence, spread and harm of aphids, so as to "cut off the source of poison, control insects and control the disease". In the initial stage of aphid occurrence, timely drug control should be used to control aphids in the early stage of aphid outbreak. 1. Agricultural control: ① popularizes disease-resistant varieties; ② strictly selects seeds and removes brown spots before sowing; ③ establishes non-(low) toxin seed propagation system and healthy seed field. Healthy seeds should be selected in the seed field, and the diseased seedlings should be removed by shoveling before the occurrence of aphids.
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