Improvement of American high-yield soybean Kaidou No. 4

Kaidou No. 4 is a new soybean variety with high yield and high quality, which was introduced from the United States by Kaifeng Zhengda Company of Henan Province with the support of the State Foreign Affairs Bureau. Limited podding habits. The plant height is 75 cm. There are 6-8 branches per plant. Leaves ovoid. White flowers. The grain is yellow, brown navel and oval. One hundred grains weigh 15.6 grams. It contains 42.1% crude protein and 2.03% fat. Medium maturity, the growth period of summer sowing is 110 days. It is characterized by dense pod setting, high yield, 200 million pods per plant and 250 per mu.

Control of bacterial spot of soybean

Soybean bacterial spot is a common disease in soybean producing areas, which reduces the percentage of complete grains, 100-grain weight, quality and yield. The disease spot of the leaf is round at first, brown to dark brown, the disease spot expands, the center becomes black, the disease spot is not protruding, and the diseased leaf is easy to fall off. The disease spots of stems and pods are brown and round, and later become spindle-shaped. The seed surface bread is covered with a layer of bacterial mucus, which often appears at one end of the seed and is shaped like "frog eyes". The diseased grains shrunk and the pathogen overwintered on diseased leaves, culms, pods and seeds.

There are many measures to prevent soybean from falling flowers and pods.

The drop of flowers and pods is an important factor affecting the yield of soybean. Under general cultivation conditions, the shedding number of flowers and pods can account for more than 50% of the total number of flowers, and seriously up to 70%. The shedding of soybean flowers and pods is mainly due to the internal physiological imbalance of the plant and poor external environmental conditions. According to our practical experience, the following measures can be taken to prevent the shedding of soybean flowers and pods: 1. Increase the application of phosphorus and potassium fertilizer, appropriate topdressing nitrogen fertilizer and micro-fertilizer. The application of phosphorus and potassium fertilizer to soybean can reduce the shedding of flowers and pods and promote the fullness of grains. Therefore, on the basis of applying sufficient base fertilizer, every 66 of the time of sowing

Prevention of soybean flower and pod shedding

First, topdressing because of the land and the seedlings. The field in which the plant can not be closed in time due to lack of fertilizer at flowering stage can be fertilized again at the early flowering stage. Generally, 5 kg urea or 10 kg ammonium sulfate per mu can reduce the shedding of flowers and pods. Second, spraying fertilizer outside the root. In flowering and pod stage, 0.5 kg urea, 1.5 kg superphosphate, 0.25 kg potassium sulfate, 25 g borax and 50 kg water are used to spray the leachate per mu, which is suitable for spraying on cloudy days or after 4: 00 p. M., which is beneficial to flower protection, pod and grain increase.

Production and application of multi-functional soybean dietary fiber

1. Physiological function of multifunctional soybean dietary fiber soybean dietary fiber mainly refers to those macromolecular sugars that can not be digested by human digestive enzymes, including cellulose, pectin, xylan and mannose. Although dietary fiber can not provide any nutrients for the human body, it has important physiological functions for the human body. Dietary fiber can significantly reduce blood pressure and plasma cholesterol, regulate gastrointestinal function, blood glucose and insulin levels. Multi-functional soybean dietary fiber (Muhifunctiona)

Planting techniques of winter soybean

The main results are as follows: 1. the sowing time of winter soybean is quite flexible, and there is no significant difference in sowing yield from early April to early June. In practice, in order to obtain suitable basic seedlings of winter soybean, in addition to correctly determining the number of planting nests per mu to provide the basis of density, we should generally sow seeds in a period of time before the closure of corn forest, so that the bean seedlings have formed the necessary nutrients before shade aggravation. it is beneficial to ensure the basic seedlings. In the planting area, it is appropriate to sow seeds with corn or later, that is, in the middle and last ten days of April, and the clear planting area of Xiaochun should sow seeds in the first and middle of May. 2. Planting mode of winter soybean

Dongxin No. 3 (soybean)

The variety source and type, formerly known as "Dongxin 2002", is a mid-mature summer soybean variety in Huaibei. It was bred in 2001 by the Agricultural Science Research Institute of Lianyungang, Jiangsu Province, using A95-10 / Sidou 11. Third, the scope of adaptation is suitable for summer soybean cultivation in Huaibei area of Jiangsu Province. IV. Yield levels and characteristics participated in the regional trial of summer soybeans in Huaibei, Jiangsu Province from 2003 to 2004, with an average mu of two years.

After two years of construction, the northeast high-oil and high-yield soybean demonstration project implemented by the state has launched a number of excellent varieties and advanced production technologies of high-oil soybean, which are gradually being produced on a large scale and widely used. On this basis, the demonstration technical expert group of northeast high-oil and high-yield soybean put forward the following suggestions for the production species and techniques of high-oil soybean in this region in 2004: in 2004, Heilongjiang Province and its reclamation areas can, according to the accumulated temperature and production conditions of different areas, continue to select high-oil varieties that have been produced in a large area and successfully popularized in 2003.

Spring sowing techniques of soybean in the year of severe drought in Northeast China

Technical guidance on current drought and spring sowing of soybeans in Northeast China: first, precipitation and temperature in last winter and spring; in autumn and winter last year, the drought in Northeast China was serious, the precipitation was less than usual, and the soil moisture was insufficient. From January to October 2007, the average precipitation in Heilongjiang Province was 402 mm, which was 20% less than that in the same period of previous years. In addition, the general "dry enclosure" in winter this year was not conducive to soil moisture conservation. Since the beginning of winter, the precipitation in some counties and cities in southern Qiqihar, most of Daqing, Hegang and Jiamusi is 90% less than that in the same period in previous years.

Management techniques of Soybean in the Middle and late stage of Northeast China

The main soybean producing areas in Northeast China and Inner Mongolia generally suffered from spring drought and then spring waterlogging. Drought, low temperature and low light caused slow plant growth, but also increased the occurrence of herbicide damage, grass damage and diseases. At present, the general plant has 2-3 compound leaves less than the same period of the normal year, and the growth is uneven. Therefore, cultivating strong seedlings, constructing reasonable population structure, promoting early maturity and preventing lodging are the key work of soybean field management in the middle and later stage. Recently, the soybean expert guidance group of the Ministry of Agriculture and the national agricultural technology