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More than 50 kinds of books and 40000 selected books are delivered free of charge.
In order to help you rekindle your enthusiasm for reading paper books, we have carried out a long-term public welfare book delivery activity. As long as you pass on the reading with us, you can get physical books for free and choose what you like in the list below.
2018-09-06 -
How to identify the age of pigeons
How to identify the age of pigeons
2018-09-07 -
Teach you to identify the age of pigeons
Teach you to identify the age of pigeons
2018-07-09 -
"ask and answer" do farmers have the responsibility to identify labels and pesticide production enterprises?
Note: the picture is an advertisement and has nothing to do with the content of the article Q: do farmers have the responsibility to identify labels and identify pesticide production enterprises? Yang Lijian answered that the farmer did not.
2019-02-26 -
There is a good way to identify watered pork, how to quickly identify the freshness of livestock meat?
Now there are many non-merchants who use water injection to increase the weight of pork sold in order to make a profit, which has hurt many consumers by 10,000 points. the editor will teach you how to distinguish between watered pork and mother pork. How to quickly identify
2020-11-11 Water injection pork identification there are clever tricks how to fast livestock -
How to identify the fungicide streptomycin?
How to identify the fungicide streptomycin? Please give guidance on the method to identify true and false pesticide streptomycin as long as it is not difficult to master the identification method. Now several simple physical identification methods are introduced as follows: 1. Hand touch: the fungicide streptomycin is not slippery and sticky after a certain period of time. The hand twist of fake medicine is smooth.
2018-07-14 -
How to identify rice yellow leaf disease
How to identify rice yellow leaf disease? Please introduce rice yellow leaf disease can be identified according to the following methods: 1 bacterial blight yellow leaf. From below upward spread, disease leaves yellow to dry white. After the injury, dark green spots appear at the tip or edge of the leaf, and then become yellow strips. The diseased part and the healthy part are obvious, like ripples.
2018-07-19 -
How to identify ripening tomatoes? What is the harm of eating it?
Tomato, also known as tomato, is a vegetable that can be eaten both raw and cooked, which is very popular in the market, but with the continuous improvement of planting technology, many dishes are ripened with hormones, and tomatoes are no exception. How to identify ripening tomatoes? What are the dangers of eating?
2020-11-08 How identify accelerate ripening tomato eat have which harm -
How to identify inferior compound fertilizer?
How to identify inferior compound fertilizer? Please guide the method of fake compound fertilizer identification can be identified from the following points: identification law the country has strict regulations on the identification of compound fertilizer bags: (1) must be marked with product name, trademark, nutrient content, production license number, standard number, net weight, factory name,.
2018-07-14 -
How much grass and feed do cows usually feed a day? How is estrus and pregnancy identified (identified)?
A cow, a female cow. Can produce milk, can give birth to offspring. So how much grass and feed do cows usually feed a day? How is estrus and pregnancy identified (identified)? How much grass and feed does a cow have to feed a day? Feed intake of cows, calculated on the basis of dry matter
2020-11-11 Usually cows one day to feed how much grass and feed -
How to identify flower diseases and insect pests?
How to identify flower diseases and insect pests?
2019-09-26 -
This year, 150 rural collective "three capital" management demonstration counties will be identified
Recently, the Ministry of Agriculture issued the Notice on the Establishment of the Second Batch of National Rural Collective "Three Capitals" Management Demonstration Counties, and decided to carry out the establishment of the second batch of national rural collective "Three Capitals" management demonstration counties. In 2012, 155 rural collectives were identified for the first time.
2016-03-20 this year 150 rural collectives will be identified as "three types of foreign capital." -
How to identify the quality of Loach seedlings
How to identify the quality of Loach seedlings
2018-07-04 -
How to identify the stability of odd flowers
How to identify the stability of odd flowers
2018-04-13 -
Teach you how to identify the age of farmed ostriches
For buyers, the age of the ostrich is also crucial. The age of an ostrich is usually identified by its appearance. At the age of 12 months, the legs and beak of the male ostrich turn white; at the age of 2, all the feathers on the back of the male ostrich fade, but the base of the neck and abdomen
2020-11-08 Teach you breeding ostrich how to identify age for select buyer -
Attention should be paid to the methods of identifying fake fertilizers and pesticides
In view of the fact that the quality of fertilizers and pesticides are intermingled on the agricultural materials market, and incidents of harming farmers occur from time to time, in order to improve the ability of the broad masses of farmers to identify fake and shoddy agricultural materials and ensure the smooth progress of spring ploughing production, a few days ago, the city's agricultural department uses to carry out the publicity campaign of "rest assured that agricultural materials enter the village and enter the household".
2018-07-15 -
2018 how much is a jin of rosewood? How to identify rosewood?
Red sandalwood is produced in Taiwan, Guangdong and Yunnan (south). Hard and dense wood, red heartwood, excellent wood for architecture, musical instruments and furniture; resin and wood medicine. So how much is 2018 rosewood per jin? How to identify rosewood? Rosewood
2020-11-09 2018 purple sandalwood price one jin more less money how to identify -
How to identify pesticide residues in vegetables
How to identify pesticide residues in vegetables
2018-08-09 -
How much is a cocker spaniel? How to identify its species?
The cocker spaniel is a small hound native to Spain. It is docile and loyal to its master, and is very popular with people. How much is a cocker spaniel on the market now? How can we identify the species of cocker spaniel? How much is a cocker spaniel for a household pet
2020-11-11 Coca more dogs less money one how to identify it its species -
How to identify the lack of water in Magnolia
How to identify the lack of water in Magnolia
2020-04-16