How many alfalfa seeds are used in one mu of land

When alfalfa is planted in one mu of land, it is suitable to sow seeds of about 4-6 jin, and the common varieties of alfalfa are alfalfa, Baoding alfalfa, big-leaf alfalfa, alfalfa, etc. During this period, suitable varieties can be selected according to the actual situation of the planting area, and the suitable sowing time of alfalfa is March-April in spring or August-September in autumn.

How many alfalfa seeds are used in one mu of land

The accurate sowing density of alfalfa seeds is beneficial to improve the yield and quality. if the seed amount per mu is too much, it will affect the emergence rate, and if the seed amount is too little, it will waste land resources. therefore, it is more appropriate to sow 4-6 jin of alfalfa seeds per mu.

II. Planting methods of alfalfa

1. Select varieties

There are many varieties of alfalfa, and whether the selection of alfalfa varieties is correct or not is the basic condition to determine the success of alfalfa planting. In recent years, alfalfa varieties with good planting prospects are mainly alfalfa. Baoding alfalfa, big-leaf alfalfa and nouye alfalfa are the second, so we can choose suitable varieties according to the actual situation of the planting area.

2. Land selection and preparation

The main results are as follows: (1) it is suitable to be planted in loam and sandy soil which is close to water source, loose soil, moderate pH or slightly alkaline soil. Generally speaking, all soils except clay can be planted, but the yield and quality of alfalfa are relatively different.

(2) when ploughing the soil, it is necessary to remove the weeds in the field, and then carry out deep ploughing. After the soil is fine and leveled, the high-quality seeds with full particles, healthy pest-free and good color are selected, and then the seeds are treated with a special treatment formula, which is beneficial to improve the resistance and germination rate of the seeds.

(3) according to the difference of climate in different regions of our country, alfalfa is generally planted in spring and autumn, that is, from March to April and August to September every year, the specific sowing time should be determined according to the actual situation, and the sowing methods include on-demand sowing, strip sowing and sowing, but strip sowing is generally used, which is convenient for field management in the later stage, and sowing 30cm can be sown according to row spacing. Then cover the seeds with soil.

4. Field management

First of all, we need to check the seedlings in the field, replenish the seedlings in the places where the seedlings grow sparsely, and then water and fertilize the seedlings. Sufficient fertilizer and water is beneficial to the growth of alfalfa, but the stagnant water in the field should be discharged in time. Fertilization can use special alfalfa bacterial fertilizer, can also increase the amount of phosphate fertilizer and organic rot fertilizer, need to weed at least 3 times a year, usually in the seedling stage and after each harvest.

5. prevention and control of diseases and insect pests

The common diseases of alfalfa are rust, brown spot, powdery mildew, downy mildew and so on. Carbendazim, chlorothalonil, topurazine and other pesticides can be used to control them, while the main pests of alfalfa are borers and some pests that harm green leaves. Fenitrothion, dimethoate and other pesticides can be used to control.

6. Rational harvesting

Alfalfa can be harvested at least 3-4 times a year, and one sowing can be produced for several years, so it can be harvested at a suitable time, the first time can be harvested when a small amount of alfalfa blossoms, usually every 35-45 days or so. Weeding and fertilization should be carried out after each harvest, which is beneficial to promote the growth of branches and leaves of alfalfa.