Management techniques of filling stage of annual barley

Barley, alias Mou Mai, Rice Mai, Naomai, is similar to wheat in nutritional composition, but slightly higher in cellulose content.

Barley belongs to annual grasses, stalks stout, smooth, glabrous, erect, leaf sheaths loosely clasping stems, glabrous or pilose at the base; two lanceolate auricles on both sides; ligule membranous, nutty, high carbohydrate content, moderate protein, calcium, phosphorus content, a small amount of B vitamins.

Because barley contains less glutenin (a kind of elastic protein), it can not make porous bread and can be used as unfermented food. Barley flour is especially popular in North Africa and parts of Asia to make porridge. Barley is also one of the main plants in China. Pearl wheat (round barley rice) is a barley grain that has been ground to remove the shell and bran skin and is added to the soup for cooking. It is found all over the world.

The growing period of barley is at least 90 days, which is shorter in cereal crops. So slopes with a short growing season in the Himalayas can also be cultivated, but the yield is low. It is also more resistant to dry heat than other small-grain crops, sowing in autumn in the near desert of North Africa and spring in the cold, warm and humid regions of western Europe and North America.

It is cultivated all over our country. Barley is the most widely distributed among cultivated crops in China, but the main producing areas are relatively concentrated, mainly in the Yangtze River Basin, the Yellow River Basin and the Qinghai-Tibet Plateau. With the development of beer industry and the demand for barley raw materials, malting barley has developed rapidly in Northwest China and Heilongjiang. According to the conditions of light and temperature in ecological factors, geographical location and sowing date, Chinese cultivated barley was divided into three ecological regions.

The management techniques of barley filling period are as follows:

First, fill the grouting water in good time

The filling stage is the final formation period of barley grain yield, and it needs more water. Filling water according to soil moisture can meet the water needs of barley grain filling, which can prevent the premature senescence of root system, and has the function of supporting root with water, protecting leaf with root and protecting grain with leaf.

Second, comprehensive prevention and control of diseases and insect pests

The filling period of barley is the peak period of many kinds of diseases and insect pests. Take the measure of "one spray and three prevention" to effectively control barley aphids, powdery mildew, rust, etc., you can use 20% triadimefon EC 50ml + 10% imidacloprid forest wettable powder 10g per mu, or use 15% rust rather wettable powder 70g 100g + 3% acetamiprid EC 20kg 30ml, spray with water 30kg.

3. Spraying foliar fertilizer

At the initial stage of grain filling, spraying 0.2% potassium dihydrogen phosphate 100 grams per mu of leaves can increase the 1000-grain weight by 2 grams and increase the yield by about 10%, because spraying potassium dihydrogen phosphate in the later stage is beneficial to increase the content of available phosphorus and sugar in barley stems and leaves, promote grain filling, increase 1000-grain weight, and advance the maturity.