Continuous Cropping Soybean Root Cyst Nematode Born On The Plant Agronomic Traits

Cropping soybean cyst nematode root of birth rate on agronomic traits of plants Yichun City in 2010 Shuangfeng completely random method of Forestry carried out even for soybean cyst nematode root of birth rate on Agronomic Traits of. The results show that the root system of soybean cyst nematode variables of birth the number of x and soybean plant height, plant weight, pod number, grain number per plant, pod number per plant deflated, grain weight per plant and other variables related to a negative correlation ? , correlation coefficients were -0.372, -0.372, -0.371, - 0.364, -0.079, -0.330, the T test showed that all the characters and root cyst nematode associated with the number of students was not significant, but with the soybean plant increase in the number of root cyst above agronomic traits have declined, the root system of soybean cyst with the increase of the number of the above hazards have increased agronomic trends. On the Root of birth the number of soybean cyst quality traits affect the results show that the correlation coefficient of soybean grain weight per plant disease is 0.247, the T test positive correlation exists between the two, but not significant, but with the soybean cyst nematode is living root system the more the weight of soybean plants of the more severe disease trends; soybean plant roots and the number of cysts per plant of birth weight of the correlation coefficient of eating insects is -0.227, a negative correlation between the two relations, but not significant. The root system of soybean cyst test counting the number of students with soybean plant height, plant weight, pod number, grain number per plant, pod number per plant deflated, seed weight and other variables are not significant regression equation, regression interceptαis negative, indicating that the above agronomic traits of soybean roots as each additional cyst nematode, the soybean plant height will reduce the 0.536 cm; soybean dry weight per plant will decrease 0.578 g; soybean pod number will decrease 0.535 a; soybean pod number per plant will decrease 0.011 deflated; soybean seed weight per plant will decrease 0.231 g of soybean cyst counting the raw number of roots per plant disease with weight regression equation for Y = 0.009x 0.431, shows that when soybean root . Each additional cyst nematode, soybean plant disease will increase by 0.009 g weight; and grain weight per plant and insect food for the regression equation: the y =- 0.003x 0.078, showed that when soybean root for each additional cyst nematode, grain weight per plant of soybean herbivory 0.003 grams of the above will reduce the agronomic traits and root cyst nematode with the students the number of correlation and regression are not significant. However, with the roots of soybean plants infected cyst which number was the number of students increased more than the harm of the agronomic traits has increased the trend...