What is the problem of rice with hemp husk not fruiting

There may be several reasons why the hemp husk does not bear fruit in rice:

1.Fertilizer. Excessive or too concentrated fertilization leads to the appearance of rice hemp husks in the later stage of rice growth, and the seed setting rate is reduced.

2.Harsh environments. During the booting stage, rice husks appear when they encounter continuous low or high temperatures.

3.Disease. If the grain blast is severe during rice heading, it may lead to rice hemp husk.

4.Other factors. Poor seed quality, improper planting time, poor management, etc., may also lead to low seed setting rate of rice.

To address these issues, the following measures can be taken:

1.Proper fertilization. Fertilize in moderation and avoid over-fertilizing.

2.Adjust the planting time. Choose the right planting time according to the local climatic conditions and avoid planting in bad weather.

3.Choose high-quality seeds. Choose high-quality, high-yielding, disease-resistant seeds to improve seed quality.

4.Strengthen field management. Scientific irrigation, reasonable fertilization, timely weeding, etc., to ensure a good environment for rice growth.

It should be noted that the above measures should be reasonably applied according to the actual situation, and it is recommended to consult professional and technical personnel if necessary.

It belongs to the hemp husk caused by high temperature that occurs in the booting stage, and it does not bear fruit. In addition, rice blast will also affect the seed setting rate and the decrease of 1000-grain weight.

Are the hemp husks you talking about brown grains?

If so, we have one here, and most of them are experiencing low temperatures at the beginning of booting, especially at the tuyere. Symptoms appear when the grain is just filled after the panicle emerges.

1. Bad weather during the heading and flowering period is mainly caused by low temperature, high temperature, rainfall, strong wind, etc.

2. Poor atmospheric environment, such as air pollution.

3. Rice blight, sheath blight, etc.

It is understood that rice is extremely sensitive to temperature during the budding and heading period, and the most suitable temperature is 25 to 30 degrees Celsius, and more than 30 degrees Celsius will have adverse effects. In case of continuous high temperature weather above 35 degrees during the booting stage, the rice flower will be underdeveloped, the pollen will be stunted and the vigor will decrease. If there is a continuous high temperature above 35 degrees Celsius during the heading and flowering period, heat damage will occur, which will affect the pollen rupture and pollen tube elongation, resulting in the formation of empty shell grains due to infertilization, and the flowering that farmers say is not fruitful.

There are many reasons for the empty husk of rice, which can be summarized as pests and diseases, climate and heavy metal pollution.

Climatic conditions. The empty husk of rice is caused by climatic conditions, mainly during the heading and flowering period, when there is high temperature and rainy weather.

1.High temperature.

Rice is particularly sensitive to temperature from booting to flowering.

About 10 days before and after heading is the most sensitive time period for rice, and when the temperature reaches more than 30, it will have an adverse effect on rice.

In the booting stage of rice, if the temperature continues to be above 35, the pollen will be stunted, resulting in a decrease in vigor and affecting pollination and fertilization.

During the heading and flowering period, if the temperature reaches more than 35, it will affect the elongation of the pollen tube, resulting in difficulty in fertilization, resulting in empty shells. If the temperature can reach 38, all the rice in the heading will not bear fruit, because the high temperature will kill the pollen directly, which is often said to be "flowers but not fruit".

2.Rainy.

Rainfall will affect the flowering and pollination of rice, and poor pollination and fertilization will cause the phenomenon of no seed formation, which is externally manifested as an empty shell.

3.Microtherm.

The impact on double cropping rice and late rice is relatively low. Because when late rice is heading and flowering, it may encounter cold dew wind, which will make it difficult to extract the rice ears. In the jointing and booting stage of rice, if the low temperature weather lasts for 5 to 6 days, it will affect the development of pollen grains, so that the spikelets of some branches of the rice ear form empty shells and produce a large number of white ears.

4.Response.

Coping with high temperature: sufficient water is needed during the booting period, and the paddy field should maintain a 2 3-inch water layer to ensure that the panicle is large and has many grains, and to cope with high temperature and heat damage.

In addition, it can also be sprayed with acadian, fruitin, etc., to improve the tolerance of rice to high temperatures.

Cope with low temperatures: Before the cold dew and wind come, fill with deep water to keep warm. The water is drained in the morning of the next day, and the river water with higher temperature is filled in the evening to achieve the effect of heat preservation.

In addition, foliar fertilizers such as potassium dihydrogen phosphate can be sprayed to enhance the cold resistance of rice plants when dealing with low temperatures, or warmers.