vì sao phân vi sinh vật khi sử dụng mỗi loại phân chỉ bón thích hợp cho một nhóm cây trồng

2 câu trả lời

-Vì nếu bón cho cây trồng không thích hợp thì sẽ có hậu quả là:

+Làm cho cây kém phát triển

+Sự sinh trưởng của cây bị chậm lại và năng suất thấp

+Nặng quá sẽ làm chết cây vì không hấp thụ được chất dinh dưỡng phù hợp

Vì mỗi loại phân có tính đặc thù riêng chỉ có thể dùng được cho một nhóm cây trô gd 

Câu hỏi trong lớp Xem thêm

Mark the letter A, B, e,or D to indicate the underlined part that needs correction in each of the following questions. ( sửa lỗi luôn ạ) 51. A lot of people think that marriage women shouldn't pursue a career. A B C D 52. We must stop discrimination on people coming from the rural area. A B C D 53. My brother is good with cooking and he can cook very delicious food. A B C D 54. I guess they may be kept home doing housework and look after their chifdren, A B C D 55. Women in rural areas might be forced to work both at home but on the fields. A B C D 56. Some people think that girls shouldn't be allowed to going to university. A B C D 57. Gender discrimination should be eliminated for create equal opportunities in educationfor everyone. A B C D 58. More girls should being chosen to represent us in the School Youth Union .. A B C D 59. Both women and men should be given equal rights for education and employment. A B C D 60. This discrimination against women and girls must be abolishing. A B C D 61. Efforts should be make to offer all children equal access to education. A B C D 62. It is clear that gender differences cannot prevent a person to pursue a job. A B C D 63. Traditional women were mainly responsible to doing housework and looking after their husbands and A B C D children. 64. Doing houseworkevery day is really boring and tired. A B C D 65. In the past, women was often passive and dependent on their husbands. A B C D 66. Women usually get less pay as men for doing the same job. A B C D

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