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Reasonable application of returning green fertilizer
Wheat back to green fertilizer is conducive to the growth of wheat seedlings, mainly due to increased tillering of wheat seedlings, increased wheat seedling population in the field, and fertilization of weak seedlings to promote the transformation of seedlings. Production is mainly to return the green fertilizer to the weak seedlings and the insufficiently-populated fields. When the wheat population in the field is too large, the application of the green fertilizer should be strictly controlled to prevent the group from being larger. In the early stage of wheat greening, more than 300,000 acres of stems and seedlings, if the leaf color is normal, generally do not apply green fertilizer; if the color of the wheat seedlings is yellow, you can apply fertilizer, but strictly control the dosage, generally according to the previous fertilization 5-10 kg of urea per acre can be used. In the early stage of rejuvenation, the amount of acres of stems and seedlings is less than 300,000. It is necessary to see whether the planting time and the seedlings are used to return to the green fertilizer. Fields that are planted early, have less seedlings, or have poor growth during seedling stage should be fertilized to promote population growth. The temperature of the late sowing wheat was low. On the one hand, the release of fertilizer was slow. On the other hand, the germination of wheat was late, the roots were born late, and the amount of base fertilizer applied to the soil was absorbed less. These fertilizers were slowly absorbed until the spring temperature rose. Absorbed in large quantities. These fields are generally not allowed to apply green fertilizer unless the wheat seedlings show signs of falling yellow.
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