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How to mitigate continuous and alternate soybean cropping? Integrated measures are key
To minimize yield losses from continuous and alternate cropping, continuous and alternate soybean planting should be avoided as much as possible, rational crop rotation should be maintained, alternate cropping should be reduced, and continuous cropping should be controlled. In the long term, the area of continuous and alternate soybean cropping should not be expanded without limit, so as to avoid declining soil productivity and creating a vicious cycle. When continuous and alternate cropping is unavoidable, alternate cropping should be arranged first, and continuous cropping should be used only when alternate cropping cannot be arranged, and continuous cropping must not exceed two years. In response to the causes of yield reduction under continuous and alternate cropping, with emphasis on regulating nutrition and controlling pests and diseases, existing scientific
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Reasons for Yield Reduction in Continuous and Alternate Soybean Cropping and Yield-Preserving Techniques
I. Reasons for Yield Reduction in Continuous and Alternate Soybean Cropping Continuous and alternate soybean cropping causes plants to grow slowly and become short, with yellowing leaves, fewer pods, and fewer seeds, ultimately leading to a significant reduction in yield. In the short term, continuous and alternate cropping intensifies the damage from cyst nematodes, root maggots, root rot, pod borers, gray leaf spot, and malignant weeds, causes unbalanced depletion of soil nutrients, leads to deficiencies in soil nutrient elements, increases pathogenic fungi and decreases beneficial bacteria in the soil, and produces certain toxins, resulting in a severe decline in soybean yield and quality. In the long term, after long-term accumulation and reproduction, diseases, insects
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Why soybeans should not be grown in continuous or alternate-year cropping
Soybean continuous and alternate-year cropping control techniques can reduce the impact on yield. Impact on soybean yield. Different environments have different effects on soybean yield. ①Continuous cropping is severe, alternate-year cropping is mild; ②severe in the west and southwest, mild in the north and east; ③severe on poor land, mild on fertile land; ④severe on ridge slopes, mild in low-lying wet areas; ⑤severe in dry years, mild in rainy years; ⑥severe with no or little fertilizer, mild with more fertilizer; ⑦severe with original-ridge sowing, mild with plowed new ridges; ⑧severe with many soil-borne diseases and pests, mild with few diseases and pests; ⑨severe on long-cultivated land, mild on newly reclaimed land; ⑩severe under drought, mild with irrigation. The four eastern leagues of the Inner Mongolia Autonomous Region are each similar to their adjacent provinces, among which the Hulunbuir League area is similar to the northern part of Heilongjiang Province, and the continuous cropping phenomenon is also very severe. Today I want to discuss three issues: first, the impact of continuous and alternate-year soybean cropping on soybean yield and quality; second, the reasons for continuous and alternate-year soybean cropping; third, control techniques.
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How to control alternate bearing in plums? These methods are essential
Plum trees have been cultivated in China for more than 3,000 years. The Book of Songs records "the blossoms are peach and plum" and "you throw me a peach, I return you a plum." The Guanzi states, "On the five fertile soils, the trees suited to them are plum and apricot." This shows that plum trees and apricot trees have a long history of cultivation in China and adapt well in both the north and the south. But for a long time, our...
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What measures are there to overcome alternate bearing in mangoes?
To overcome alternate bearing in mangoes, the first requirement is an adequate amount of flowers; the second is for the flowering period to avoid low-temperature rainy weather; the third is to find ways to increase the fruit set rate. The measures are: 1. Choose varieties. Based on the characteristics of Guangxi's early spring, which is mostly low-temperature rainy weather, it is ideal for mangoes to bloom after early April. Therefore, varieties should be chosen...
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How to prune navel orange trees with alternate bearing? Detailed methods
1. Girdling to promote flowering: In mid-September of the following year, use a girdling tool to girdle upright vigorous branches, with a blade spacing of 0.3 cm. After girdling, apply Flower Promotion King No. 2 (southern variety), which can control shoots and promote flowering, and protect flowers and fruits. 2. Pre-flowering pruning: Winter pruning should be light or skipped, with the focus placed on pre-flowering pruning. High...
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Alternately water jasmine with 2 kinds of acidic water, one flower can bloom for 15 days, and it will be covered in buds within 1 month
Jasmine is a potted plant that flower lovers generally like. Its flowers are pure white and its scent is fresh; smelling it lifts your mood, and its plant form is simple and natural, making it an excellent potted flower that is deeply loved by people. Besides being grown in pots for ornamental viewing...
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Causes of Alternate Bearing in Pecan and Measures to Overcome It
Causes of Alternate Bearing in Pecan and Measures to Overcome It 1 Causes of Alternate Bearing in Pecan and Technical Measures to Overcome It 1.1 Current Status of Alternate Bearing in Pecan and Its Harm The phenomenon of alternate bearing in pecan is...
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