In the process of rice planting, rice empty gluten not only reduces the yield of rice, but also increases the workload of farmers when harvesting. So many growers wonder why there is an empty sorghum and satiety on rice. What about the grain? The following is a small series edited by Huinong.
Rice empty glutinous rice is a kind of situation in rice production, which mainly refers to the empty granules that are not purified and the semi-empty granules that cannot be developed after fertilization.
In the field of normal year, the empty grain rate is about 10%. If it is an abnormal year, the empty grain rate can reach about 40%. Therefore, the impact of this situation on production is still very large.
There are many reasons for rice grains to be produced, which are divided into internal and external causes:
The main causes are:
1. Before heading, the male and female organs are underdeveloped, affecting the normal fertilization process and forming an empty shell.
2. When the head is raised, the male and female organs cannot be coordinated, and it is also impossible to carry out the pollination to form an empty shell.
External factors are more complicated:
1. The climatic conditions, such as temperature, humidity, light and wind, etc., when the temperature is lower than 20 degrees and higher than 35 degrees, it will affect fertilization. In addition, the humidity is lower than 60%. When the temperature is higher than 80%, the fertilization cannot be completed normally.
2, cultivation conditions, if the application of excessive nitrogen fertilizer, will increase the empty sputum rate. In addition, the early stage of drainage is not timely, the medium-term drying time is long, and the water loss is too early in the late stage, leading to premature aging of rice, which increases the amount of open space.
Knowing the reasons for the formation of empty granules, then the prevention and treatment methods will have:
1. The variety should be selected, and the varieties with strong resistance to stress and disease resistance can reduce the incidence of empty mites.
2, rational fertilization and irrigation, NPK according to a certain proportion of fertilization, not more than nitrogen and phosphorus and potassium fertilizer, in irrigation, should pay attention to, for example, below 20 ° C low temperature, should be timely deep water insulation, the sun should be timely field.
3, with external top dressing, high temperature or low temperature, spray phosphorus and potassium fertilizer outside the leaves, enhance the resistance of rice and rice, and increase the seed setting rate and increase the 1000-grain weight.
Rice cultivation is a technical activity. From planting to harvesting, every step in the process cannot be taken lightly. For those who want rice to reach high yield, the reasons and solutions for the rice empty granules compiled by Huinong.com are quickly reviewed. Look!
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