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Technical Guidance on Chemical Weed Control in Paddy Fields
Chemical weed control in paddy fields is a key step in achieving high and stable rice yields. There are three main types of weeds in the rice fields of our county: grassy weeds such as barnyardgrass, sprangletop, and crabgrass; broadleaf weeds such as monochoria, pondweed, and Rotala indica; and sedge family weeds. In recent years, because rice planting methods in our county have become diverse, the weed spectrum in paddy fields has undergone considerable change: first, some malignant weeds in paddy fields are on the rise. In addition to barnyardgrass, which remains widespread and abundant, sprangletop and Cyperus serotinus have shown a clear upward trend;
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Identifying Zinc Deficiency Symptoms in Rice and Techniques for Skillfully Applying Zinc Fertilizer in Paddy Fields
Zinc is one of the essential trace elements for the growth and development of rice. Zinc deficiency in rice shows obvious symptoms. When rice is deficient in zinc, chlorotic yellow-white spots first appear in the midrib area of the lower leaves, with reddish-brown spots and irregular patches forming on them, which then gradually expand into reddish-brown streaks, turning reddish-brown and drying from the leaf tip downward, and from...
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What are the key management techniques for growing winter melon in paddy fields?
How do you manage winter melon grown in paddy fields? What methods can increase yield? Growing winter melon in paddy fields can use the following three methods to increase yield: fertilizer and water management. During the stem and vine growth stage of winter melon, watering is not easy, so a combined "promote" and "control" management approach should be adopted. After watering, cultivate in time to conserve soil moisture and extend the watering interval...
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What is the correct method and purpose of draining paddy fields for rice?
How do you drain a paddy field for rice? What does it do? Please explain the field-draining method. Draining paddy fields is one of the main technical measures for increasing rice yields and promoting early ripening. 1. Main purposes of field draining. 1) Control ineffective tillering and consolidate effective tillering. When rice tillering has reached a certain number, that is, once there are enough seedlings, in our province, in terms of time, the effective tillering termination period is around the end of June. Early tillers can form panicles, while tillers after the termination period cannot form panicles or only form small panicles. In production, by draining the field, the young tiller buds at higher positions cannot get water and fertilizer and stop growing, reducing nutrient consumption, so that the main stem and large tillers receive more nutrient supply, laying a foundation for strong stems and large panicles.
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