What conditions should a good sunflower variety have?
It is generally believed that excellent varieties should have the following characteristics:
① has high yield per unit area.
② oil sunflower seeds have high oil content.
③ has strong stress resistance.
④ has wide adaptability.
However, the following points should also be noted when selecting and using hybrids.
(1) the purity of hybrid seeds. The higher the purity, the higher the yield, and vice versa. Therefore, when selecting seeds, we must ask the purity to prevent someone from adulterating. The purity of the varieties can be found in the oil sunflower growing period, the varieties with high purity have the same height and height, the florescence is neat, and there are no sterile plants.
(2) Regional differences. Some people think that as long as the introduced varieties are well-known good varieties, they can achieve high yield in the introduced areas, which is sometimes true and sometimes ineffective. The similarity between the local climatic conditions and the introduction land should be taken into account, especially the accumulated temperature, frost-free period, rainfall, etc., because the local frost-free period is short (for example, 100 days), and the growth period of the introduced variety is too long, the new variety can not mature normally in the region, resulting in a reduction in yield. In addition, if we refer to the experience of introducing new varieties in neighboring villages and counties (banners), we can often succeed.
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How to raise zucchini in winter shed
Zucchini requires strong light, so in practical operation, we can uncover the grass curtain early and release it late, wipe the drip-free greenhouse film every 3-5 days, remove the grass shavings and dust from the film, hang the reflective film on the back wall of the shed, and increase the light intensity in the shed; in case of continuous rain and snow
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Perennial cultivation techniques of pure sesame oil wheat vegetable
The pure sesame oil wheat vegetable produced by the vegetable Research Institute of the Chinese Academy of Agricultural Sciences has been planted in Chuanshan Township, Qixing District for more than three years. This variety has strong adaptability, crisp taste, good quality, high market price and is deeply loved by farmers and consumers. The perennial cultivation techniques of rape and wheat are summarized as follows.
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