Method for culturing wild pollinating insects to achieve industrialized production of hybrid soybean seeds

Abstract

The invention provides a method for culturing wild pollinating insects to achieve industrialized production of hybrid soybean seeds. According to the method, the wild pollinating insects are culturedin a mode of interplanting honey-source crops with soybeans in order to solve the problems that the population number of the wild pollinating insects in a large-area seed production field is small, the distribution is nonuniform, and the setting rate in a central area is low. After the honey-source crops are planted, 8 species of active pollinating insects are added into the seed production fieldat the full flowering period of soybeans (stage R2), the number of the pollinating insects is about 4,000-5,500 per hectare, and the pollinating insects are distributed uniformly. The outcrossing setting rate in the central area of the seed production field is increased from 65% to 90%. The total setting rate is increased from 80% to 92%, and the seed production yield is increased from 850 kg / hectare to 1,350 kg / hectare. The seed production yield of the hybrid soybeans can be effectively increased, the seed production cost is reduced, large-scale seed production is achieved, and the method hasgreat significance in achieving industrialization of the hybrid soybeans.

Description

technical field [0001] The invention provides a method for cultivating wild pollinators to realize the industrial production of hybrid soybean seeds, which is an improvement on the existing method for realizing the industrial production of hybrid soybean seeds by insects, and belongs to the technical field of agricultural seed production and cultivation. Background technique [0002] Existing technology studies have shown that the use of crop heterosis is an effective way to increase yield. So far, soybean heterosis has been used to breed a number of high-quality hybrid soybean varieties, which have increased yield by more than 12% compared with the control. The production method of hybrid soybean seeds is different from that of conventional soybeans. Hybrid soybean seed production requires the male sterile line to rely on pollinators to successfully receive the pollen from the male parent before it can bear fruit. It is difficult to use heterosis on a large scale. At the pr...

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Problems solved by technology

[0003] (1) The seed production area is dry and rainless, the soil is sandy and alkaline, and the underground pests are serious. The female parent of the male sterile line has the characteristics of low bud rate and bud vigor. Large quantity;

[0004] (2) The seed production area is a traditional farming area, where large amounts of pesticides and fertilizers are used, and there is no large number of nectar plants. During the growth period, multiple intertillage and weeding have resulted in the lack of habitat and reproduction conditions for pollinators in the seed production field, so the species of wild pollinators are single and extremely large. less, and its migration ability is very weak, the seed setting rate in the central area of ​​the seed production field is much lower than that in the peripheral area, which affects the overall yield;

[0005] (3) At the current stage, under the 1:2 interval planting mode of parent-to-parent ratio, the female parent accounts for about 66.7%, and the effective land utilization rate is low;

[0006] (4) Due to the short flowering period of the main male parent and the mismatch of the flowering period of the parental parent, the female parent cannot receive the pollen of the male parent in a timely and sufficient amount, which greatly reduces the yield of hybrid soybean seed production

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